Desserts
Baking Reese's peanut butter cookies in a cast iron skillet transforms this classic treat into something extraordinary—crispy edges that shatter with every bite and gooey centers that melt like a dream. The skillet's thick base distributes heat evenly, ensuring perfect results every time without the need for fancy equipment. I developed this recipe after years of experimenting with cast iron desserts, and it's now my go-to for foolproof cookies that impress even the most skeptical dessert lovers.
What makes this recipe special is the combination of rich peanut butter, melted Reese's pieces, and a touch of brown sugar that creates a caramelized crust.
The cast iron skillet not only ensures even baking but also adds a subtle smoky depth to the cookies, elevating them beyond your typical bakery version.
With just 15 minutes of prep and 12 minutes in the oven, you'll have cookies that are crispy on the edges and perfectly gooey inside—no overbaking required.
The secret to achieving that signature crispy texture lies in the skillet itself. Its ability to retain and distribute heat creates an ideal baking environment, while the heavy material prevents uneven cooking.
These cookies are rich enough to satisfy a peanut butter craving but light enough to pair with a glass of cold milk or a scoop of vanilla ice cream. The result?
A batch of cookies that tastes like a cross between a classic peanut butter cookie and a decadent Reese's treat.
Perfect for holiday gatherings, potlucks, or a cozy weeknight dessert, these cookies are easy to adapt for dietary preferences—just swap the butter for a plant-based alternative.
The cast iron skillet ensures consistent results, making this recipe a game-changer for anyone who loves baking but wants to keep things simple. Let's get started!
Ingredients for cast iron skillet reese's peanut butter cookie
Rich peanut butter, gooey Reese's, and a cast iron skillet's magic—just 12 ingredients for cookies that taste like dessert heaven.
| Ingredient | Amount | Notes |
|---|---|---|
| Reese's Peanut Butter Cups 🍫 | 12 whole | Chopped into small pieces |
| Creamy Peanut Butter 🥜 | 1 cup | Natural, unsweetened preferred |
| Unsalted Butter 🧈 | ½ cup | Softened but not melted |
| Granulated Sugar 🍚 | ½ cup | White or light brown |
| Packed Brown Sugar 🍚 | ½ cup | Light or dark variety |
| Large Eggs 🥚 | 2 whole | Room temperature preferred |
| Pure Vanilla Extract 🌿 | 1 tsp | High-quality, not imitation |
| All-Purpose Flour 🌾 | 1 ½ cups | Spooning, not scooping |
| Baking Soda 🧂 | ½ tsp | Not baking powder |
| Salt 🧂 | ½ tsp | Fine sea salt preferred |
| Granulated Sugar 🍚 | ¼ cup | For topping, extra-fine preferred |
| Flaky Sea Salt 🧂 | 1 tbsp | For finishing, optional |
The Reese's pieces are non-negotiable here—Hershey's classic works best, but any brand with creamy peanut butter filling will do. Grab the family-size bag from Target or Walmart to save money. Chop them into tiny bits (about 1/4-inch pieces) so they melt evenly. Pro tip: Freeze the chopped pieces for 10 minutes before mixing—they'll stay chunky in the dough. For the peanut butter, natural, unsweetened gives the best flavor, but creamy store-brand works in a pinch. The butter? Don't melt it—softened is key for that tender crumb.
No Reese's? Crushed peanut butter cups (like Hershey's) or extra peanut butter plus chocolate chips work. Running short on peanut butter? Substitute sunflower seed butter for a nut-free version. The brown sugar can be swapped for white, but it won't caramelize as nicely. Eggs? Room temperature makes them easier to mix, but cold works if you're in a rush. For the flour, spoon it into the cup and level it off—don't scoop. And if you're out of vanilla extract, vanilla bean paste adds extra depth. The flaky sea salt? Maldon is my go-to, but any good-quality flaky salt will do.
Dough keeps for 3 days in the fridge, wrapped tightly in plastic. For longer storage, freeze portions for up to 3 months—just thaw before baking. The cast iron skillet? Preheat it for 10 minutes before adding dough for that signature crispy edge. Leftover cookies? Store in an airtight container with a layer of parchment between them so they stay soft. These reheat beautifully—30 seconds in the microwave brings back that gooey magic.
Why You'll Love This Recipe
- Skillet Magic: I swear by this method—no rolling dough, no messy scooping. Just dump, mix, and let the cast iron do the work while you sip coffee. The edges get that perfect caramelized crust without a second thought.
- Peanut Butter Bliss: That first bite? Pure decadence. The melted Reese’s oozing through the cookie is like a hug for your taste buds, and the peanut butter keeps it rich but not cloying. Honestly, I’ve made cookies for years, but this combo takes the cake.
- Party Ready: Make a batch ahead for gatherings—these stay fresh for days if you refrigerate them (yes, even the gooey centers). They’re sturdy enough for potlucks but still feel special enough for a dessert table. My secret weapon for last-minute events.
- Budget-Friendly Luxury: You’re using pantry staples here, but the result tastes like you spent hours baking. Reese’s cups stretch farther than you’d think, and the cast iron means no fancy equipment. Between us, this is my way of treating myself without breaking the bank.
Step-by-step instructions for cast iron skillet Reese's peanut butter cookies
Here's how to make these showstopping cookies with perfectly crisp edges and gooey centers—no fancy equipment needed.
Mix the Cookie Dough
In a large bowl, combine the 1 cup creamy peanut butter, 0.5 cup unsalted butter, 0.5 cup granulated sugar, and 0.5 cup packed brown sugar. Use a hand mixer or wooden spoon to beat on medium speed for 2-3 minutes until smooth and fully blended. The mixture should look like a thick, creamy paste.
Add the 2 whole large eggs, one at a time, mixing well after each addition. Stir in the 1 teaspoon pure vanilla extract until fully incorporated. In a separate bowl, whisk together the 1.5 cups all-purpose flour, 0.5 teaspoon baking soda, and 0.5 teaspoon salt. Gradually add the dry ingredients to the wet mixture, mixing just until combined—don't overmix or the cookies will be tough.
Finally, fold in the 12 whole Reese's peanut butter cups, chopped into small pieces, using a spatula. The dough will be thick and sticky, but that's exactly what we want for those crispy edges. Let the dough sit at room temperature for 10 minutes while you preheat your oven.
Preheat and Prepare the Cast Iron Skillet
Preheat your oven to 375°F. Place a 10-inch cast iron skillet in the oven to heat while the dough rests. The skillet needs to be piping hot when you add the dough to ensure those crispy edges. If you don't have a cast iron skillet, a heavy oven-safe skillet will work too.
While the skillet heats, divide the dough into 4 equal portions (about ¼ cup each) and roll each portion into a ball. Place the dough balls on a parchment-lined plate and cover with plastic wrap. Chilling isn't necessary here—we want the dough to stay soft for that gooey center.
Cook the Cookies in the Skillet
Remove the hot skillet from the oven and carefully place 2 dough balls in the center, spacing them about 2 inches apart. Return the skillet to the oven and bake for 8-10 minutes, until the edges are deep golden brown and the tops look slightly puffed. You want to see a crispy, crackly crust forming around the edges—this is your signal that they're ready.
After 8-10 minutes, carefully remove the skillet from the oven using oven mitts. The cookies will look underdone in the center, but that's perfect—they'll finish cooking off the heat. Sprinkle 1 tablespoon flaky sea salt evenly over the top of the cookies, then immediately sprinkle 0.25 cup granulated sugar over them. The sugar will melt slightly and caramelize, adding a sweet crunch.
Finish and Serve
Let the cookies sit in the skillet for 1-2 minutes to set slightly, then carefully transfer them to a wire rack using a spatula. Repeat the process with the remaining 2 dough balls, baking them for another 8-10 minutes and finishing with the sugar and salt.
Serve the cookies warm for the best texture—crispy edges will hold their shape, while the centers remain soft and gooey. These cookies are best enjoyed fresh from the oven, but they'll keep at room temperature for 2-3 days if stored in an airtight container. The cast iron skillet ensures even heat distribution, giving you that perfect balance of crispy and gooey every time.
Pro Tips For Making Cast Iron Skillet Reese'S Peanut Butter Cookie
- Preheat That Skillet: Cast iron needs to be smoking hot—think 400°F or higher—before the dough hits it. I learned this the hard way when my first batch spread into a sad, flat pancake instead of crispy cookies. Let it heat for 5-7 minutes with the lid off so the bottom gets properly searing hot.
- Chop Reese’s Small: Cut those peanut butter cups into tiny, even pieces—about ¼-inch cubes—so they melt evenly without sinking to the bottom. I used to eyeball it, but now I measure them against a dime for consistency. Uneven chunks = uneven browning.
- Press Dough Firmly: Don’t just plop the dough balls in—press them down hard with a spatula or your palm to flatten them to about ½-inch thick. This keeps them from puffing up into hockey pucks while cooking. (Yes, even if you’re impatient like me.)
- Rotate for Even Browsing: After 2-3 minutes on one side, flip the cookies and rotate them 180 degrees before pressing down again. This ensures the edges crisp up evenly, not just the spots you’re staring at. My first batch looked like a sunburn victim—uneven and blotchy.
Creative variations of this recipe
Peanut Butter Cup Swaps
Swap the classic Reese's for Hershey's Peanut Butter Morsels—they're smaller and melt more evenly, creating a marbled effect. For a chocolate lover's twist, replace half the Reese's with mini dark chocolate chips (like Ghirardelli 60%) and fold in 1 tbsp peanut butter chips for extra texture. 🌶️
Need a nut-free option? Use Enjoy Life Chocolate Chips (dairy-free) and sunflower seed butter (like SunButter). For a spiced kick, add ½ tsp cinnamon or ¼ tsp cayenne to the dough—trust me, the heat balances the sweetness perfectly.
Gluten-Free Adaptation
Replace the all-purpose flour with a 1:1 gluten-free blend (like Bob's Red Mill 1-to-1). For best results, add ½ tsp xanthan gum to the dry ingredients to mimic gluten's structure.
The dough will be slightly stickier, so wet your hands when rolling the balls. These cookies stay crispy but may spread a little more than traditional versions.
Vegan Version
Use Earth Balance vegan butter (or Miyoko's) and flax eggs (1 tbsp ground flaxseed + 3 tbsp water per egg). For the peanut butter, Justin's Almond Butter works well, but natural peanut butter without oil is best.
The baking soda can be swapped for ½ tsp apple cider vinegar + ½ tsp baking soda for lift. These cookies hold their shape but have a slightly denser crumb.
Double Chocolate Twist
Fold in ½ cup white chocolate chips (like Guittard) alongside the Reese's for a marbled effect. For extra richness, replace 2 tbsp of the peanut butter with 2 tbsp melted chocolate (dark, milk, or white).
The result? A cookie with layers of peanut butter, chocolate, and caramelized sugar—like a dessert in every bite. 💫
Seasonal Flavors
For fall, add ½ tsp pumpkin pie spice and swap 2 tbsp of the sugar for 2 tbsp maple syrup.
In winter, fold in crushed peppermint candies (like Candy Cane pieces) for a festive touch. Spring/summer calls for freeze-dried strawberries (pulse in a blender) mixed into the dough—adds a fruity surprise with every bite.
Nutrition facts
Frequently asked questions
Why does baking in a cast iron skillet make these cookies different?
The skillet's thick base distributes heat evenly, creating crispy edges that shatter while keeping the centers gooey. The heavy material also prevents uneven cooking, ensuring every bite has that perfect texture. Plus, the skillet adds a subtle smoky depth to the flavor—unlike traditional baking sheets!
Can I make these cookies without Reese's pieces?
Swap the Reese's for chopped peanut butter cups (like Hershey's) or add 1 extra cup chocolate chips plus 2 tbsp peanut butter chips for a similar effect. The dough will still hold together, but the flavor will be slightly less rich. For extra decadence, try white chocolate chunks instead.
How do I prevent the cookies from sticking to the cast iron skillet?
Always preheat the skillet for 10 minutes before adding dough—this creates a natural nonstick surface. If needed, lightly grease the skillet with butter or oil after preheating. Avoid overcrowding the skillet (only 2 cookies at a time), and use a spatula to gently transfer them. The skillet should be hot but not smoking when you add the dough.
What if my cookies turn out too soft or cakey?
This usually happens if the dough was overmixed or baked too long. For next time, mix the dough just until combined (don't overbeat), and bake for 8-10 minutes max. The centers should look slightly underdone—they'll firm up as they cool. If they're already baked, try reheating them for 10-15 seconds to restore crispiness.
Can I make these cookies ahead of time?
Yes! Store baked cookies in an airtight container at room temperature for 2-3 days. For longer storage, freeze them for up to 3 months. Reheat in the oven at 300°F for 5 minutes or microwave for 10-15 seconds to revive the crispy edges. The cast iron skillet ensures they reheat beautifully!