01 -
Preheat oven to 350°F. Line a 9x9" pan with parchment paper.
02 -
Cook raspberries, sugar, and lemon juice over medium heat for 5 minutes until saucy. Strain seeds if desired.
03 -
Melt butter in a saucepan. Remove from heat; whisk in sugar, cocoa, and salt.
04 -
Add vanilla and eggs one at a time, mixing well after each.
05 -
Fold in flour until just combined, then stir in chocolate chips.
06 -
Spread batter into pan. Dollop raspberry sauce on top and swirl with a knife.
07 -
Bake 25-30 minutes until edges are set but center is slightly fudgy. Cool completely before slicing.