375 degree oven. Using a muffin pan, add 1/2 tsp. butter to each cup. Sprinkle 1 tsp. sugar and 1/4 tsp. cinnamon to each muffin cup. Cut biscuits into quarters; roll into balls and place 3 balls into each muffin cup containing butter, sugar, and cinnamon. Top muffins with another 1/2 tsp. butter. Sprinkle 1/3 tsp. sugar and a big pinch of cinnamon on top to finish.
Bake 12 - 15 minutes or until golden brown and bubbly. Remove from oven and drizzle sweetened condensed milk over the top of each muffin. ENJOY!!!