Greek Stuffed Peppers with Avgolemono Sauce on BakeSpace.com

Ingredients

• 2 tablespoons olive oil
• 1 pound ground beef
• 2 medium onions, finely chopped
• 3/4 stick (6 tablespoons) butter
• 1 cup cooked rice
• 7 canned tomatoes
• 1 teaspoon red-wine vinegar
• 1 teaspoon cinnamon
• 1/4 cup grated Parmigiano-Reggiano
• 6 small green bell peppers
• 1 cup chicken stock
• 2 tablespoons flour
• 1 egg
• 2 tablespoons lemon juice
• salt and pepper to taste