Maple Blondies with Chocolate and Butterscotch Chips

INGREDIENTS

2 1/3 cups

all-purpose flour

1 1/2 tsp

baking powder

3/4 tsp

salt

14 tbsp

unsalted butter, at room temperature

1 1/4 cups

firmly packed dark brown sugar

1/2 cup

maple syrup, Grade B

large eggs, room temperature

1 tsp

pure vanilla extract

3/4 cup

semisweet chocolate chips

3/4 cup

butterscotch chips