Mix butter, cheeses, mayonnaise, green onions and garlic in a bowl, blending well.
Spread the cut side of bread with spread.
Bake at 350degrees for 7 minutes, then place under broiler about 3 minutes longer.
Cut into slices and serve.
Notes
How to reheat garlic cheese bread:Oven Method: Wrap bread in foil and re warm in the oven at 350 degrees F for about 10 minutes.Microwave Method: Warm in the microwave for only 10 seconds . If you do it longer the bread will get hard and tough. I prefer warming in the oven if at all possible.