It occurs to me that there just might be someone out there still buying garlic bread at the store, pre-made. In hopes that I can help someone, I shall post my "recipe". Nothing special, really, but it seems to go over well.
You will need:
1 loaf of crusty bread, either french or sourdough will do
1 stick of butter, or the tub equivalent, melted in the microwave
1 bulb of garlic, pressed. If you don't have a garlic press, minced works almost as well
2 cups grated cheese-Optional, and the type of cheese is up to you, I find a blend of colby and cheddar works well
Cut your loaf in half lengthwise
Pour the butter over the loaf evenly, using a dinner knife to spread it into the nooks and crannies.
Use half the bulb on each loaf half, and try to spread it evenly.
If desired, sprinkle the grated cheese on top.
Put in oven on the low broiler setting. Put it on the middle or lower rack, too close to the flame and you risk a fire. TRUST ME on this...Check after about 5 minutes. When the bread is a nice golden brown on the edges, you are done.
Note that an entire bulb of garlic might be overkill for some. When making it for others, I tend to use only a half bulb.