1 (16 oz) loaf of French bread, unsliced
1/2 pound bulk pork sausage
1/2 pound ground chuck
1 medium onion, chopped
2 cups (8 oz) mozzarella cheese, shredded
1 large egg, lightly beaten
1/4 cup parsley, chopped
2 tablespoons Dijon mustard
1/2 teaspoon salt
1/4 teaspoon pepper
2 tablespoons butter
1 clove garlic, minced
Preheat oven to 400 degrees.
Cut off ends of French loaf. Hollow out loaf with a long serrated bread knife, leaving a 1/2 inch shell. Process bread removed from inside loaf in a food processor to make coarse crumbs.
Cook sausage, beef, and onion in a large skillet until meat is browned, stirring until it crumbles; drain. Stir in 1 cup breadcrumbs, cheese, and next 6 ingredients. Spoon into shell.
Melt butter in a saucepan. Add garlic; cook 1 minute. Brush garlic butter over loaf. Wrap loaf in foil, leaving top open slightly, place on a baking sheet. Bake for 25 minutes. Cut into 4 pieces.