1-First Steps: Mixing the Dough: Begin by beating 1/2 cup unsalted butter, 1/2 cup brown sugar, and 1/2 cup granulated sugar until they’re light and creamy this takes about three minutes and sets the base for your cookie cups. Add in 1 large egg and mix until it’s all combined, then stir in 2/3 cup creamy peanut butter and 1 teaspoon pure vanilla extract for that signature flavor. Next, incorporate 1 and 1/4 cups all-purpose flour, 1/2 teaspoon baking soda, and 1/2 teaspoon salt on low speed, then bump it up to medium until the dough is soft and creamy.

2-First Steps: Mixing the Dough: Don’t forget to chill the dough in the fridge for at least one hour; this step is key to preventing sticky situations. If your dough feels too soft, just give it a bit more time it’s worth the wait for perfect shaping later.

3-Baking and Filling: Preheat your oven to 325°F and grease those mini muffin pans. Scoop about 1 tablespoon of dough, roll it into balls, and place them in the pans. Press your thumb into the center of each to make an indent, pushing the dough up the sides to form cups. Bake for 14-15 minutes until the edges are lightly browned, then cool in the pan for 5-10 minutes and press the centers again to deepen the indents.

4-Baking and Filling: Once cooled, melt 8 ounces chopped semi-sweet chocolate with 1 teaspoon oil until smooth, let it cool for three minutes, and fold in 8 ounces mascarpone cheese. Spoon this fudge filling into each cup and top with 1/2 cup toffee bits or chopped peanuts if you like. The whole process, from chilling to serving, takes around three hours and yields 36-40 mini cups.