Inspired by Fluffernutter—peanut butter and Marshmallow Fluff—sandwiches, this recipe perfectly balances sweet and salty flavors into one irresistible, melt-in-your-mouth cookie.
Peanut Butter-Marshmallow Skillet Cookie
Makes 1 (10-inch) cookie
Ingredients
- ½ cup (113 grams) unsalted butter, softened
- ¾ cup (165 grams) firmly packed light brown sugar
- 1 large egg (50 grams)
- 2 large egg yolks (37 grams)
- ⅔ cup (170 grams) creamy peanut butter
- 1 tablespoon (21 grams) honey
- 1 teaspoon (4 grams) vanilla extract
- 1¾ cups (219 grams) all-purpose flour
- ½ cup (57 grams) coarsely chopped roasted unsalted peanuts
- ¾ teaspoon (4 grams) baking powder
- ¾ teaspoon (2.25 grams) kosher salt
- ½ teaspoon (2.5 grams) baking soda
- Marshmallow Crème (recipe below)
- Garnish: flaked sea salt
Instructions
- Preheat oven to 325°F (170°C). Spray a 10-inch enamel-coated cast-iron skillet with baking spray with flour.
- In the bowl of a stand mixer fitted with the paddle attachment, beat butter and brown sugar at medium speed until fluffy, 3 to 4 minutes, stopping to scrape sides of bowl. Add egg and egg yolks, one at a time, beating well after each addition. Add peanut butter, honey, and vanilla, beating until combined.
- In a large bowl, stir together flour, peanuts, baking powder, kosher salt, and baking soda. With mixer on low speed, gradually add flour mixture to butter mixture, beating just until combined.
- Using a small offset spatula, spread 2½ cups (556 grams) dough into bottom and ¾ inch up sides of prepared skillet. Spread 3 cups (210 grams) Marshmallow Crème onto dough in skillet, leaving a small border around edges. Using a small spoon, dollop remaining dough all over Marshmallow Crème. Using a small offset spatula and short upward moves, drag dough into Marshmallow Crème to create a swirl as desired.
- Bake until golden brown, about 40 minutes, loosely covering with foil during final 10 minutes of baking to prevent excess browning. Garnish with sea salt, if desired. Let cool on a wire rack for 15 to 20 minutes before serving. Serve with remaining Marshmallow Crème. Store in an airtight container for up to 3 days.
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Marshmallow Crème
Makes 5 cups
Ingredients
- 2 large egg whites (60 grams), room temperature
- ¾ cup (255 grams) light corn syrup
- ⅓ cup (67 grams) granulated sugar
- ½ teaspoon (1.5 grams) kosher salt
- ½ teaspoon (1 gram) cream of tartar
- 1½ teaspoons (6 grams) vanilla extract
Instructions
- In the top of a double boiler, whisk together egg whites, corn syrup, sugar, salt, and cream of tartar. Cook over simmering water, stirring constantly, until sugar dissolves and an instant-read thermometer registers 160°F (71°C), about 7 minutes.
- Carefully transfer mixture to the bowl of a stand mixer. Using the whisk attachment, beat at high speed until doubled in volume and stiff peaks form, 3 to 4 minutes. Beat in vanilla. Use immediately.
Tried this recipe?Let us know how it was!
Could you use large marshmallows instead of fluff?
Hi Nancy,
Thank you for reaching out! This recipe includes a recipe for Marshmallow Crème, so you can make and use that instead of marshmallows or fluff. Happy baking!