PREHEAT oven to 350°F. Mix sugar and cinnamon in shallow dish or pie plate. Cut each biscuit into eight pieces. Add to sugar mixture, turning to evenly coat each biscuit piece.
SPRINKLE half of the trail mix onto bottom of greased 12-cup fluted tube pan or 10-inch tube pan; cover with half of the biscuit pieces. Drizzle with half of the butter. Repeat all layers. Sprinkle with any remaining sugar mixture.
BAKE 25 to 30 min. or until wooden toothpick inserted near center comes out clean. Cool in pan 10 min. Invert bread onto wire rack; gently remove pan. Cool bread completely.