Preheat oven 350* Cut bread crosswise in 1" slices to within 1" of bottom of loaf. Repeat in opposite direction. Cut cheese into 1/4' slices and cut into slices to fit into bread cuts. In small bowl mix butter, green onions and poppy seeds. Drizzle over bread. Wrap in foil, place on baking sheet and bake 15 min. Unwrap and bake 10 min longer till cheese melts.