A flavorful spin on a classic treat. All ages will enjoy this easy brownie-in-a-mug. Best of all, this cinnamon brownie recipe only takes 2 minutes to make. Simply mix, microwave for about 90 seconds in intervals, and serve brownie warm, or top with vanilla ice cream and enjoy a brownie à la mode. This brownie mix in a mug is great for kids who are learning to cook (because it’s easy and doesn’t dirty extra dishes), college students (it only requires a microwave), and couples (it’s two brownie servings in one mug).