Browned Butter-Cinnamon Dulce De Leche Stuffed Chocolate Chip Cookies

INGREDIENTS

1 cup

butter (, diced into pieces (I used 1/2 c salted 1/2 c unsalted))

2 1/2 cups

all-purpose flour

2 tsp

cornstarch

1 1/2 tsp

cinnamon

1 tsp

baking powder

1/2 tsp

baking soda

1/2 tsp

table salt

1 1/4 cups

packed light-brown sugar

1/3 cup

granulated sugar

1 tsp

vanilla extract

large eggs

2/3 cup

milk chocolate chips

2/3 cup

semi-sweet chocolate chips

2/3 cup

bittersweet chocolate chips

1 cup

dulce de leche (, homemade or store bought)