Breakfast Cookie Skillet - Big Recipe

Ingredients

• ***For the streusel:***
• 1/2 cup brown sugar
• 1/4 cup all-purpose flour
• kosher salt, to taste
• 3 tablespoons unsalted butter, melted
• ***For the cookie-cake:***
• 2 cups all-purpose flour
• 1 1/2 teaspoons baking powder
• 1 teaspoon kosher salt
• 8 tablespoons unsalted butter, softened
• 1 1/3 cups white sugar
• 2 eggs plus 1 egg yolk
• 1 tablespoon vanilla extract
• 1/2 cup whole milk or buttermilk
• 2 cups semisweet chocolate chips or dark chocolate chips
• ***For the icing:***
• 1 cup powdered sugar
• 1 tablespoon whole milk