Chocolate Chip Cookie Cake

1 1/2 sticks unsalted butter (room temp)
2 cups (400 grams) brown sugar
2 large eggs & 2 egg yolks (room temp)
2 tsp vanilla
4 cups (500 grams) all purpose flour
4 tsp cornstarch
2 tsp baking soda
1 tsp salt
1 1/2 cups chocolate chips (450 grams)

Preheat oven to 350. Use 14 in. round cake pan, line with parchment paper.  Beat butter approx 1 minute till creamy.  Add brown sugar.  Again, beat till creamy approx 1 minute.  Mix in eggs, extra yolks & vanilla.

In separate bowl, combine flour, cornstarch, baking soda & and salt.  Slowly add to wet ingredients.

Add chocolate chips mix till disbursed (approx 5 seconds)

Press dough evenly into pan.  Bake 20 min.

Use Homemade Chocolate Frosting to decorate