Making Stuffed Brownie Cookies is a straightforward process. Follow these steps to create your delicious treats:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. Cream the Butter and Sugars: In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
3. Add Eggs and Vanilla: Beat in the eggs one at a time, followed by the vanilla extract until well combined.
4. Mix Dry Ingredients: In a separate bowl, whisk together the flour, cocoa powder, baking soda, and salt.
5. Combine Mixtures: Gradually add the dry ingredients to the wet mixture, stirring until just combined. Be careful not to overmix.
6. Fold in Chocolate Chips: Gently fold in the chocolate chips, ensuring they’re evenly distributed throughout the dough.
7. Scoop the Dough: Using a cookie scoop or spoon, scoop out a portion of dough and flatten it slightly in your hand.
8. Add Filling: Place about 1 teaspoon of your chosen filling in the center and then carefully fold the edges of the dough over the filling to create a ball. Ensure the filling is fully enclosed.
9. Place on Baking Sheet: Place the stuffed dough balls on the prepared baking sheet, spacing them about 2 inches apart.
10. Bake: Bake in the preheated oven for 10-12 minutes or until the edges are set, and the centers look slightly underbaked.
11. Cool: Remove from the oven and let the cookies cool on the baking sheet for 5-10 minutes before transferring them to a wire rack to cool completely.

Following these steps will help you create the perfect Stuffed Brownie Cookies that are sure to impress!