grilled stuffed pizza burgers - Sutter Home Family Vineyards

Ingredients

• 2 lbs-lean ground beef
• 3/4 cup-pre-made pizza sauce (like pizza quick sauce)
• 1 tbsp-italian seasoning
• 1 8oz pkg-shredded pizza cheese blend
• 24 slices-small, thin sliced pepperoni
• 1/2-onion, chopped fine
• 1 7oz can-mushrooms, chopped fine
• 1/4 green pepper-chopped
• 1 loaf focaccia bread cut into six burger sized pieces