1-Preheat Oven: preheating your oven to 350°F (175°C) and lining a baking sheet with parchment paper; this little step keeps everything from sticking and makes cleanup easy.

2-Mix Wet Ingredients: In a bowl, mix the unsalted butter, creamy peanut butter, granulated sugar, light brown sugar, egg, and vanilla extract until smooth and fluffy that’s the base of your dough coming together.

3-Add Dry Ingredients: Next, add the dry ingredients to the mix: stir in the all-purpose flour, baking soda, baking powder, salt, and quick-cooking oats until everything is well combined. This creates a dough that’s just right not too sticky, not too dry for shaping your cookies.

4-Bake Cookies: Scoop the dough onto the baking sheet in even spoonfuls, leaving space for them to spread as they bake. Pop them in the oven for 10-12 minutes until the edges turn golden, then let them cool on a wire rack to set perfectly.

5-Prepare Filling: Once cooled, it’s time for the fun part: preparing the filling by blending unsalted butter, creamy peanut butter, sifted powdered sugar, and heavy cream until creamy and spreadable.

6-Assemble Sandwiches: Sandwich two cookies together with a dollop of this filling for that irresistible center.