1 c. mayonnaise
1 1/2 tsp. minced garlic
1 (1 lb.) round sourdough bread, halved horizontally
1 c. freshly grated Parmesan cheese (3 oz.)
Butter
2 tbsp. finely chopped fresh basil or 2 tsp. dried, crumbled

Preheat broiler. Mix mayonnaise, Parmesan and garlic in large bowl to blend. Arrange bread, cut side up on large cookie sheet. Butter bread. Broil until crisp and brown.

Spread Parmesan mixture over cut sides of bread. Broil until top is puffed and golden brown. Sprinkle with chopped basil. Cut bread into wedges and serve.