Prep time: 15 minutes Cook time: 9-12 minutes Materials: 5 tbsp. unsalted butter melted 3/4 cup sugar 1 tbsp. whole milk 1 tbsp. vanilla extract 1 large egg 1 1/2 cups all- purpose flour sifted 1/2 tsp. baking powder sifted 1/4 tsp. baking soda sifted Pinch of salt 2 tbsp. instant coffee 1/4 tsp. cinnamon…