01 -
Lightly grease a 12-cup mini muffin tin with cooking spray or softened butter to prevent sticking.
02 -
Place about 1 tablespoon of cookie dough into each muffin cup. Press to evenly cover the bottom and sides, forming a well.
03 -
Preheat oven to 350°F (177°C). Bake cookie cups for 12 to 15 minutes until edges are golden and centers set.
04 -
Immediately after removing from the oven, use the back of a spoon or end of a small glass to gently press down the centers to deepen the wells. Allow to cool completely in the tin.
05 -
Place chocolate chips and heavy cream into a microwave-safe bowl. Microwave in 30-second increments, stirring in between, until melted and smooth. Stir in vanilla extract.
06 -
Spoon or pipe the warm chocolate mixture into each cooled cookie cup, filling nearly to the top but leaving space for marshmallows.
07 -
Top each cup with mini marshmallows. Return tray to oven and bake for 2 to 3 minutes until marshmallows are puffed and lightly golden.
08 -
Sprinkle with crushed peppermint or sprinkles while marshmallows are warm. Allow chocolate to cool slightly, then serve warm or at room temperature.