Step 1

Preheat oven to 350°

Step 2

In a large bowl, using a wooden spoon, combine melted butter and both sugars. Stir until there are no lumps.

Step 3

Add in vanilla, egg and yolk. Stir until mixture is smooth and egg is fully incorporated.

Step 4

Stir in flour, baking soda and salt until incorporated.

Step 5

Fold in chocolate chips.

Step 6

Spread evenly in a 10″ cast iron skillet.

Step 7

Bake 15-20 minutes until edges start to golden. Don’t overcook. The center will appear slightly loose.

Step 8

Let cool 10 minutes on wire rack and scoop onto plates or bowls.

Step 9

Serve with vanilla ice cream.