Cast Iron Skillet Reese's Peanut Butter Cookies Recipe: Skillet-Melted Fudgy Centers with Crunchy Edges

This cast iron skillet Reese's peanut butter cookie recipe transforms your kitchen into a bakery with its foolproof method for crispy edges and fudgy centers—all in one skillet. The secret lies in the cast iron's even heat distribution, which creates that signature texture you can't get in an oven.

After years of testing variations, I've perfected this technique to deliver cookies that are rich, nutty, and dangerously addictive.

The process is surprisingly simple: mix your dough, press it into the hot skillet, and let the cast iron work its magic. You'll need just five ingredients—plus a few pantry staples—and about 15 minutes of active time.

The cast iron's heat conducts evenly, ensuring every bite has that perfect balance of crispy edges and gooey centers that melt into your mouth. This isn't just a cookie; it's an experience.

What makes these cookies truly special is the caramelized texture you get from the skillet. The edges develop a golden-brown crust while the centers stay soft and chewy, just like your favorite bakery treat.

The Reese's pieces stay gooey and intact, adding pockets of peanut butter and chocolate that make each bite irresistible. It’s the kind of dessert that disappears faster than you can say "second helping."

For an extra touch, sprinkle a pinch of flaky salt on top before baking—it enhances the peanut butter flavor and adds a sophisticated finish. These cookies are perfect for holidays, potlucks, or satisfying that late-night sweet tooth. Let’s get baking!

Ingredients for cast iron skillet reese's peanut butter cookie

Five core ingredients plus a few pantry staples make these skillet cookies irresistible.

The peanut butter matters here—natural, creamy style gives the best texture, but crunchy works too if that's what you've got. Butter should be cold when you mix it (pull it out of the fridge right before measuring). Land O'Lakes or Plugrá are my go-tos for consistency, but any unsalted butter works. The Reese's pieces? Chop them small—about 1/4-inch chunks so they melt evenly without sinking. I grab the mini Reese's cups when I'm feeling fancy, but the full-size ones save money and work just fine. The caramel topping is optional but adds that bakery-style finish.

No peanut butter? Substitute sunflower seed butter for a nut-free option, though the flavor won't be identical. Short on butter? Coconut oil at the same amount keeps things dairy-free, but texture might be slightly different. The vanilla extract is non-negotiable—imitation stuff won't give that warm depth. If you're using brown sugar, pack the cup tightly for accurate measurements. The dough should hold together but not be sticky—if it's too dry, add a teaspoon of milk. Too sticky? Chill it for 10 minutes before pressing into the skillet.

This dough keeps 3 days in the fridge, wrapped tightly in plastic. For best results, let it sit at room temperature for 15 minutes before using. The caramel topping can be made ahead and stored in the fridge for up to 1 week. Once baked, these cookies stay fresh for 2 days at room temperature, but honestly, they disappear faster than that. Store leftovers in an airtight container—though I can't promise they'll last that long.

Step-by-step instructions for cast iron skillet Reese's peanut butter cookies

Here's how to create gooey, skillet-melted cookies with crispy edges and rich peanut butter centers.

In a large mixing bowl, combine the 1 cup unsalted butter and 1 cup granulated sugar. Cream them together using a hand mixer on medium speed for 3-4 minutes until light and fluffy. You'll know it's ready when the mixture nearly doubles in volume and becomes pale in color.

Add the 1 cup peanut butter, 1 whole large egg, and 1 teaspoon vanilla extract. Mix on low speed until everything is fully incorporated and smooth. In a separate bowl, whisk together the 2 cups all-purpose flour and 1 teaspoon flaky sea salt. Gradually add the dry ingredients to the wet mixture, mixing just until combined. The dough will be thick and sticky—this is normal and exactly what we want for fudgy cookies.

Using a sharp knife, carefully chop the 12 whole Reese's peanut butter cups into small, ¼-inch pieces. This ensures even distribution throughout the dough. Fold the chopped pieces into the dough using a silicone spatula, being careful not to overmix. The dough will look messy, but that's perfect—it guarantees pockets of melted chocolate and peanut butter in every bite.

Cover the bowl with plastic wrap and refrigerate for at least 30 minutes (or up to 24 hours). Chilling the dough is crucial—it helps the cookies hold their shape in the skillet and prevents excessive spreading. If you're in a hurry, you can place the bowl in the freezer for 15 minutes to speed up the process.

Place a 10-inch cast iron skillet over medium heat and let it warm for 3-4 minutes. You want the skillet to be hot but not smoking—just warm enough to create a golden crust on the cookies. While the skillet heats, divide the chilled dough into 12 equal portions (about 2 tablespoons each). Roll each portion into a ball and place them in the skillet, spacing them 1 inch apart.

Here's the thing—don't press down on the dough balls. They need to spread naturally as they bake, creating those beautiful, crispy edges. Let them cook undisturbed for 4-5 minutes until the bottoms are golden brown and the edges start to set. You'll see the centers still look soft and slightly undercooked—this is exactly what we want for that signature fudgy texture.

Once the bottoms are golden, carefully spoon 1 tablespoon of salted caramel ice cream topping over each cookie. The heat from the skillet will cause the caramel to melt and create a glossy, sticky glaze. Watch closely—this happens quickly, so be ready to remove the skillet from heat as soon as the caramel starts to bubble.

Let the cookies sit in the skillet for another 1-2 minutes to allow the caramel to fully melt and absorb into the dough. Then, using a thin spatula, carefully transfer the cookies to a wire rack to cool for 2-3 minutes. The centers will still be warm and gooey, but they'll firm up slightly as they cool. Sprinkle each cookie with a pinch of flaky sea salt while they're still warm for that perfect balance of sweet and salty.

These cookies are best served warm straight from the skillet. The contrast of the crispy edges, gooey peanut butter centers, and melted caramel topping makes every bite irresistible. If you need to store them, let them cool completely, then transfer to an airtight container. They'll keep at room temperature for 3-4 days, though I promise you won't have any leftovers that long.

Pro tip: For an extra decadent touch, serve these cookies with a scoop of vanilla ice cream or a drizzle of warm chocolate sauce. The combination of textures and flavors is pure comfort food at its finest. Enjoy them while they're still warm—you'll be glad you did!

Best sauces and condiments for these flavors

Peanut Butter Sauce

Warm up ½ cup creamy peanut butter with ¼ cup heavy cream and 1 tablespoon honey in a small saucepan over low heat until smooth. Stir in ½ teaspoon vanilla extract and a pinch of flaky sea salt.

This rich, velvety sauce pairs perfectly with the crispy edges of your skillet cookies, adding an extra layer of peanut butter goodness. Drizzle over warm cookies or use it as a dip for a decadent twist. 🥜

Salted Caramel Drizzle

For a bakery-style finish, melt ½ cup salted caramel sauce (store-bought or homemade) in a microwave-safe bowl in 30-second intervals, stirring until completely smooth. Drizzle 1 teaspoon per cookie right before serving—it’ll create a glossy, gooey contrast to the crispy edges.

I like Trader Joe’s Salted Caramel Sauce for its perfect balance of sweet and salty. Let it sit for 1-2 minutes so it soaks into the warm cookie. 🍯

Chocolate Ganache

Combine ½ cup heavy cream with ½ cup chopped dark chocolate (I use Ghirardelli 70% cocoa) in a heatproof bowl. Microwave in 20-second bursts until the chocolate melts completely, then stir until silky smooth.

Let it cool slightly before drizzling over cookies—this adds a luxurious chocolate layer that complements the peanut butter perfectly. For extra flair, sprinkle with crushed pretzels or sea salt flakes. 🍫

Vanilla Bean Ice Cream

Serve your skillet cookies with a scoop of homemade vanilla bean ice cream for a classic pairing. Look for brands like Ben & Jerry’s Vanilla Bean or Breyer’s French Vanilla if you’re short on time.

The creamy coldness contrasts beautifully with the warm, crispy cookies. For a gourmet touch, add a sprinkle of crushed pistachios or a drizzle of honey***.