These make excellent, easy Appetizers-- or accompaniments to a soup or salad meal, a potluck contribution, or just for a snack. So delish and easy. You may garnish many different ways. They can be served hot from the oven, or at room temp.-- either way they always get gobbled up!
Preheat Broiler. Slice the bread into 3/4" slices on a slight diagonal. Place in one layer on baking sheet. Place under broiler and cook for up to 5 minutes until slices are golden brown and lightly toasted (*watch carefully so bread does not burn!)
Mix together Mayonnaise, Pesto, Garlic, Parmesan cheese, and Mozzarella cheese, plus salt and pepper to taste.
Remove toasted bread rounds from oven, and turn over to untoasted side.
Slather each piece with a generous amount of the mayo-pesto mixture. (Use all of the mixture equally between the slices of bread).
Turn oven to Bake (350 deg. F.). Place bread rounds in the oven and bake for about 5 to 7 minutes, until mayo-pesto mixture gets slightly puffy and "melty".
Turn broiler back on. Broil for about 2-3 minutes, until Mayo-Pesto mixture gets bubbly and golden. Remove from oven.
Serve hot from the oven or at room temperature. If desired, garnish with one of the suggested items listed above. These are delicious!