Step 1

Preheat oven to 350 degrees F.

Step 2

Line an 8" square baking pan with parchment paper or aluminum foil. Set aside.

Step 3

In a large mixing bowl, stir together melted butter and brown sugar. Stir well.

Step 4

Add vanilla extract and egg and stir until the egg is well incorporated.

Step 5

Add dry ingredients and stir until the dough is thick and sticky.

Step 6

Stir in chocolate chips.

Step 7

Spread the dough in prepared pan. Bake for 20 to 25 minutes. For me the magic number was 22 minutes. The edges should be puffed up and the top appear dry but if you gently shake the pan it should still jiggle slightly.

Step 8

Let the bars cool in pan completely.

Step 9

Cut into squares and serve.