Apple Oat Bars with Dulce de Leche

INGREDIENTS

1 cup

packed brown sugar

3/4 cup

unsalted butter, room temperature

1 3/4 cups

all-purpose flour

1 1/2 cups

old fashioned oats (NOT instant oats)

1 tsp

cinnamon

1 tsp

kosher salt

1/2 tsp

baking soda

apples, peeled, cored, and diced

juice of half a lemon

3 tbsp

all-purpose flour

1 cup

dulce de leche (you can buy this in the store or you can make your own, recipe can be found here)