Make a caramel sauce with butter, brown sugar, corn syrup. Put in the bottom of muffin cups. Add nuts as desired. Cut refrigerator biscuits into 8 pieces, place in a bowl with melted butter, toss to coat. Distribute evenly among muffin cups, sprinkling cinnamon between layers. Bake 350 degrees about 20-25 minutes. Watch them so they don't burn. When done, turn out onto a platter.