01 -
Preheat oven to 325°F. Line a 12-cup muffin tin with paper liners and lightly spray liners with cooking spray.
02 -
In a medium bowl, whisk melted butter and sugar. Add eggs one at a time, whisking well between additions. Stir in vanilla extract.
03 -
In a separate bowl, whisk together cocoa powder, flour, and salt. Fold into wet ingredients just until combined. Gently fold in semi-sweet chocolate chips.
04 -
Divide brownie batter evenly among muffin cups, filling each about one-third full. Bake for 10-12 minutes until just set but not fully baked.
05 -
Beat cream cheese until smooth and fluffy. Gradually add sugar and beat until incorporated. Add eggs one at a time on low speed. Fold in vanilla extract and sour cream.
06 -
Pour cheesecake mixture over the partially baked brownie bases, filling cups nearly to the top. Sprinkle mini chocolate chips over cheesecake layer if desired.
07 -
Set muffin tin inside a larger pan and pour hot water halfway up the sides to create a water bath. Bake for 20-25 minutes until edges are set but centers still jiggle slightly.
08 -
Turn off oven, crack oven door open, and allow cups to cool inside for 30 minutes. Remove from oven and water bath, then cool completely at room temperature.
09 -
Refrigerate for at least 4 hours or overnight. Serve with optional chocolate sauce, whipped cream, and fresh berries as desired.