Cookie Dough Brownie Cake

Ingredients
Brownie Cake
- 1 and 1/2 cups vegetable oil
- 3 cups sugar
- 3 teaspoons vanilla extract
- 6 eggs
- 1 and 1/2 cups flour
- 1 cup cocoa powder
- 3/4 teaspoon baking powder
- 1/4 teaspoon salt
Cookie Dough Filling
- 3 sticks unsalted butter, at room temperature
- 3/4 cup light brown sugar, packed
- 3 and 1/2 cups confectioners� sugar
- 1 cup all-purpose flour
- 3/4 teaspoon salt
- 3 Tablespoons milk
- 2 and 1/2 teaspoons vanilla extract
Ganache Frosting
- 4 ounces semi-sweet chocolate, finely chopped (or use chocolate chips)
- 1/2 cup heavy whipping cream
- 1/4 cup light corn syrup
- 2 teaspoons vanilla extract
- Extra chocolate chips, for garnish
Original source: lemon-sugar.com