Dad's Favorite Bars | Cooking Professionally

Ingredients

• 2 3/4 cups all-purpose flour, spooned and leveled
• 1 1/2 teaspoons cornstarch
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1 cup unsalted butter, melted and cooled for 5 minutes
• 1 cup light or dark brown sugar, packed
• 1/2 cup granulated sugar
• 2 large eggs, room temperature
• 2 teaspoons pure vanilla extract
• 1 1/4 cups milk chocolate M&M's
• 3/4 cup semisweet chocolate chips