1-Prep Your Workspace and Preheat Oven: Start by preheating your oven to 350°F. Line two baking sheets with parchment paper to prevent sticking and ensure even baking. This fluffernutter cookie recipe shines with proper setup, avoiding soggy bottoms or uneven cooks. Gather all ingredients this mise en place keeps you moving smoothly, especially for beginners or busy parents.

2-Cream the Wet Ingredients: First Step: In a large bowl, beat the ½ cup softened unsalted butter, 1 cup creamy peanut butter, ½ cup granulated sugar, and ½ cup brown sugar together. Use a hand mixer on medium speed for 2-3 minutes until light and fluffy. This incorporates air for tender cookies. Scrape sides often. Room-temp butter creams best; microwave briefly if needed. The mixture should look pale and creamy, signaling good emulsion. Add the 1 large egg next, beating until fully combined. This step builds the dough’s moisture base, preventing dry cookies.

3-Mix in Dry Ingredients to Form Dough: Second Step: In a separate bowl, whisk 1 ¼ cups all-purpose flour, ½ teaspoon baking soda, and ¼ teaspoon salt. Gradually stir this dry mix into the wet ingredients using a wooden spoon or low-speed mixer. Stop when just combined no overmixing, or cookies turn tough. The dough will be thick and scoopable. Fold in optional ½ cup chocolate chips or chopped peanuts here for even distribution. Taste a pinch: Adjust salt if needed. This forms the sturdy yet soft base for your gooey peanut butter marshmallow cookies.

4-Assemble and Shape the Cookies: Third Step: Scoop 1-tablespoon portions of dough, rolling into balls. Flatten half slightly into discs. Place 1 teaspoon marshmallow fluff in each center use a hot-water-dipped spoon to avoid sticking. Top with another dough ball, sealing edges gently by pinching and rolling into a smooth ball. Aim for 24 cookies total. Space 2 inches apart on sheets. Press lightly for even baking. Marshmallow inside creates the signature ooze without mess. For more link to detailed fluffernutter cookies techniques.

5-Bake and Cool for Perfection: Fourth Step: Bake one sheet at a time for 10-12 minutes. Edges turn golden; centers stay pale and soft. Rotate halfway for even heat. Overbaking dries them out pull early for chewiness. Final Step: Cool on sheets 5 minutes, then transfer to a wire rack. They firm up as they cool, marshmallow setting gooey. Dust with powdered sugar or sea salt for flair. Store as below. Total time: 30 minutes active, yields crowd-pleasers.