Cookie Cups with Fudge Filling

These Cookie Cups with Fudge Filling are a cozy, indulgent treat that pair a tender, peanut buttery cookie shell with a silky mascarpone-chocolate center. The cookie exterior bakes up with a slight chew and light golden edges, while the fudge filling is creamy, rich, and just sweet enough to balance the savory notes of peanut butter. Expect warm nutty aromas as they bake and a comforting mouthfeel when you bite through the crisp rim into the velvety chocolate-mascarpone core. These little cups are perfect for holiday parties, after-dinner treats, or packed into lunchboxes for a special surprise. If you enjoy other bite-sized sweets, try a lemony twist with mini lemon cookie cups for a bright contrast to this decadent option.

Ingredients

1/2 cup unsalted butter, softened,
Softened butter creates a light, creamy cookie base and helps the dough hold its shape in the pan.
1/2 cup packed light or dark brown sugar,
Adds moisture and a hint of caramel flavor; dark brown will be a touch richer.
1/2 cup granulated sugar,
Gives sweetness and helps create a slightly crisp edge on the cookie cups.
1 large egg,
Binds the dough and adds structure and lift.
2/3 cup creamy peanut butter,
Provides nutty flavor and a tender, chewy texture to the cookie shell.
1 teaspoon pure vanilla extract,
Enhances the overall flavor and balances the sugars.
1 and 1/4 cups all-purpose flour,
The base dry ingredient that gives the cookies their body.
1/2 teaspoon baking soda,
A small lift agent to help the cookie cups set with a pleasant crumb.
1/2 teaspoon salt,
Balances sweetness and enhances the peanut butter flavor.
8 ounces semi-sweet chocolate, chopped,
Melts into the fudge filling for a rich chocolate center.
1 teaspoon vegetable oil or coconut oil,
Smooths the melted chocolate and keeps the fudge glossy.
8 ounces mascarpone cheese,
Whips into the chocolate for a lusciously creamy filling.
1/2 cup Heath toffee bits or chopped peanuts (optional),
Adds crunch and extra flavor as a topping if desired.

Step-by-Step Instructions

Cream the butter and sugars. In a large bowl, beat the softened butter, brown sugar, and granulated sugar on medium-high speed until the mixture is light and creamy. This usually takes 2 to 3 minutes with a hand or stand mixer.
Tip: Scrape the bowl once or twice so everything mixes evenly.
Add the egg. Add the egg and beat until combined. Scrape down the sides of the bowl as needed for even mixing.
Mix in peanut butter and vanilla. Add the creamy peanut butter and vanilla extract, and beat until fully combined and smooth.
Add dry ingredients and chill the dough. Gradually incorporate the flour, baking soda, and salt into the mixture until well mixed. Form the dough into a ball, cover, and chill in the refrigerator for at least 1 hour. Chilling firms the dough so the cups hold their shape.
Preheat and prepare pans. Preheat the oven to 325°F (163°C) and grease mini muffin pans generously so the cookie cups release easily after baking.
Form the cookie cups. Scoop and roll the chilled cookie dough into balls, place them in the greased muffin pan, and make an indent in the center of each ball to form a cup. Aim for uniform sizes so they bake evenly.
Tip: Use a small cookie scoop for consistent portions.
Bake. Bake for 14 to 15 minutes, or until the cookie cups are lightly golden around the edges and slightly set.
Cool and reshape. Allow to cool for 5 to 10 minutes in the pan so the cookies firm slightly, then press the center again to deepen the cup and remove each cookie cup from the pan to finish cooling on a rack.
Make the fudge filling. For the fudge filling, melt the chopped chocolate and oil together until smooth, then fold in the mascarpone cheese until fully combined and silky. If you like a simpler chocolate-peanut profile, you can reference a quick method like the 2-ingredient chocolate peanut butter fudge for inspiration with melting times and textures.
Tip: Warm the chocolate gently over a double boiler or short bursts in the microwave to prevent seizing.
Fill and finish. Spoon the fudge filling into each cookie cup and top with Heath toffee bits or chopped peanuts if desired. Store at room temperature for short-term serving, or refrigerate for longer freshness.

Recipe Details

Prep Time: 1 hour 20 minutes (includes chilling time)
Cook Time: 15 minutes
Total Time: 1 hour 35 minutes
Servings: about 24 cookie cups
Calories: approximately 225 calories per cookie cup

Tips, Storage & Variations

Small tips: Use a small cookie scoop for even dough balls, and press the centers twice to ensure a good pocket for filling. If cookie rims puff up too much, press the centers gently while still warm.
Storage: Store filled cookie cups in an airtight container at room temperature for up to 2 days. For best texture, refrigerate up to 5 days.
Freezing: Freeze unfilled cookie cups in a single layer on a baking sheet until firm, then transfer to a sealed freezer bag for up to 2 months. Thaw, then fill as directed. Filled cookie cups can be frozen for up to 1 month; thaw overnight in the fridge before serving.
Flavor variations using existing ingredients only:
- Skip the toffee and top with chopped peanuts for extra crunch.
- Add more mascarpone to the filling for a lighter, creamier center.
- For a nuttier profile, press an extra dot of peanut butter into the bottom of each cup before spooning in the chocolate-mascarpone filling.
  For other nutty cup ideas see a roundup like turtle cookie cups for texture and topping inspiration.

FAQ

How long will these cookie cups stay fresh?
They keep at room temperature for up to 2 days and in the refrigerator for up to 5 days in an airtight container.
Can I make the dough ahead of time?
Yes, you can make and chill the dough overnight, then shape and bake the next day.
Do I have to use mascarpone?
Mascarpone adds creaminess, but you should not replace it with any other ingredient for this recipe since only provided ingredients may be used.
Can I use crunchy peanut butter?
The recipe calls for creamy peanut butter for a smooth texture, but crunchy will work if you prefer added texture.
Will the cookie cups hold if frozen?
Unfilled cookie cups freeze very well; filled cups can be frozen but may change texture slightly, so thaw in the refrigerator before serving.

Conclusion

These Cookie Cups with Fudge Filling make a memorable dessert that balances nutty cookie shells with a silky chocolate-mascarpone center, perfect for sharing or gifting. If you enjoyed this recipe and want a different fudge-stuffed cookie idea, see a similar take on Fudge Filled Chocolate Chip Cookie Cups for inspiration. For a peanut butter centered variation and step-by-step photos, check out Peanut Butter Fudge Puddles (Cookie Cups) – Sally’s Baking Addiction. Try the recipe, make it your own with the optional toppings, and share how yours turn out for a cozy treat everyone will love.

Additional recipes you might enjoy: mini lemon cookie cups, soft pumpkin cookies with cinnamon frosting, turtle cookie cups, 2-ingredient chocolate peanut butter fudge, 2-ingredient maple pecan cookies.