INGREDIENTS
Cooking spray
2 sticks
unsalted butter, melted and cooled
1 cup
sugar
3
large eggs
1 tsp
pure vanilla extract
1 cup
all-purpose flour
1/2 cup
hot chocolate or cocoa mix
1 tsp
fine salt
1/2 tsp
baking powder
1
bag semisweet chocolate chips
72
mini marshmallows