4 tbsp unsweetened cocoa powder 2 tbsp flour 1 cup granulated sugar 1 1/2 cups whole milk 4 tbsp butter 1 tsp vanilla In a medium sauce pan whisk together the dry ingredients. Pour in the milk and whisk vigorously to combine. Heat over medium-high until the mixture bubbles. Turn heat down to medium and stir until mixture has thickened to a gravy consistency. Remove from heat and stir in butter and vanilla.