Preheat your oven to 350 degrees Fahrenheit. This step is crucial to ensure even baking, so don’t skip it! Grease a 12-cup mini-muffin tin to prevent sticking.
Prepare the brownie mix according to the package directions. Usually, this involves adding water, eggs, and oil. Stir the mixture until smooth, making sure there are no lumps.
Fill each muffin tin about two-thirds full with the brownie batter. You want to leave room for the wonderful peanut butter filling.
Bake the brownie cups in the preheated oven for about 10 minutes. The edges should look set while the center may still appear slightly undercooked.
Once baked, remove the muffin tin from the oven and let it cool slightly. This cooling period allows the brownies to firm up a bit.
Using your thumb or the back of a spoon, press an indentation in the center of each brownie cup. This will create space for the creamy peanut butter filling.
While the brownie cups are cooling, beat the heavy cream until stiff peaks form. This will add a light, airy texture to your filling.
In a separate bowl, beat together the softened cream cheese, peanut butter, and powdered sugar until the mixture is smooth and creamy.
Gently fold the whipped cream into the peanut butter mixture. This step is key to creating a light and fluffy filling that will contrast beautifully with the dense brownie base.
Transfer the peanut butter filling to a large plastic bag and snip off one corner. This will make it easier to pipe the filling into each brownie cup.
Fill each brownie cup with the peanut butter mixture, allowing it to mound slightly above the edge of the brownie for that decadent look.
Finally, sprinkle the tops with mini chocolate chips for added sweetness and crunch. These are the finishing touch that makes each bite even more delightful!
Store your Peanut Butter Brownie Cups in the refrigerator until you’re ready to serve.