In a bowl, combine biscuit mix and 1/4 cup sugar. In another bowl, beat the egg yolks, milk and oil; stir into dry ingredients just until moistened. Spoon 1-1/2 tablespoons of batter into 12 paper-lined muffin cups. Place a banana slice, cherry half and walnut half in each cup. Top with remaining batter.
In a small bowl, beat the egg whites until soft peaks form. Gradually add remaining sugar, beating until stiff peaks form. Fold in coconut. Spoon over batter. Top with remaining cherry halves. Bake at 400° for 14-18 minutes or until a toothpick comes out clean. Cool for 5 minutes before removing from pan to a wire rack. Store in the refrigerator. Yield: 1 dozen.