Caramel swirl hunks

1. Find dulce de leche on the baking aisle or with Mexican foods.
Preheat oven to 350. Generously spray a 13x9 pan with nonstick cooking spray and place it on a parchment paper lined baking sheet. In a mixer bowl, blend butter and both sugars. Add eggs, vanilla, and oats and blend well. Fold in flour, baking powder, baking soda and salt. Then fold in chocolate chips. Spread batter in prepared pan. Top with dollops of dulce de leche and then swirl or smear dulce de leche somewhat into batter.
Bake 35 to 38 minutes until batter is set, not wobbly and liquid. If seems browned around the edges but jiggly in the center, lower the temp to 325 and continue baking 10 to 15 minutes longer until set. Refrigerate or freeze 1 hour. Cut into large hunks or blocks.