INGREDIENTS
1
Egg, Large
1 1/2 cups
All purpose flour
3/4 tsp
Baking powder
2 1/2 tbsp
Cocoa
1 tsp
Cornstarch
1 1/2 tsp
Food coloring, Red
3/4 cup
Plus more for garnish white chocolate chips
1/4 tsp
Salt
1 cup
Sugar
1 tsp
Vanilla extract
1 tsp
Distilled white vinegar
1/2 cup
Butter, Unsalted