Peppermint Chocolate Brownie Cake

Ingredients

• 1 1/2 cups all purpose flour
• 2 tablespoons cocoa powder
• 2 oz sticks unsalted butter 8
• 10 ounces dark chocolate chips
• 1 cup white sugar
• 1 cup brown sugar
• 1 1/2 teaspoons peppermint extract
• 6 large eggs
• 2 teaspoons vanilla extract
• 3 Ghirardelli White chocolate Peppermint Bars 3.5oz
• 1 cup heavy cream
• 1 3/4 cups powdered sugar
• 1/2 cup cocoa powder
• 6 tablespoons butter at room temperature
• 1/4 cup milk
• 1 teaspoon vanilla extract