Split French bread loaf into halves horizontally. Mix butter, cheeses, mayonnaise, green onions and garlic in bowl, blending well. Spread the cut side of bread halves with spread. Bake at 180ºC or 7 minutes, then place under broiler about 3 minutes longer. Cut into slices & serve. By David R. Ford, Black Angus Executive Chef in The Sacramento Bee, Mar 29, '95.