Chewy Chocolate Chip Oatmeal Bars

2 C flour
1 tsp baking soda
1 tsp baking powder
1 tsp salt
1/2 tsp cinnamon
2 1/2 C old fashioned oats
1 1/2 C brown sugar
1 1/4 C butter, melted
2 eggs
1 Tb vanilla
2 1/2 C milk chocolate chips

Preheat your oven to 350 degrees. In your stand mixer or large mixing bowl combine flour, baking soda, baking powder, salt and cinnamon. Mix in oats and  brown sugar.  Melt butter and pour it into the bowl. Mix for one minute. Add eggs and vanilla. Mix until the dough has combined. It will be crumbly.  Mix the chips in. Spray a 9x13 pan with cooking spray and press the dough into it. Bake for 20 minutes.  It will look underdone, but when the toothpick comes out clean, they are done.