Rocky Ledge Bars (aka "Crack Bars")

INGREDIENTS

cooking spray

1/2 cup

unsalted butter (softened)

2 1/4 cups

all-purpose flour

2 1/4 tsp

baking powder

1 tsp

kosher salt

1 1/2 cups

packed brown sugar (can use dark or light, I typically use light)

large eggs

1 tsp

pure vanilla extract

1 cup

miniature marshmallows

1 cup

semisweet chocolate (can use chips, coarsely chopped)

1 cup

milk chocolate chips

1 cup

toffee bits

1/2 cup

white chocolate (can use chips, coarsely chopped)