Vegetable Hot Dish

Ingredients

• 2 cups frozen mixed vegetables (like peas and carrots, or broccoli and cauliflower)
• 1 small onion, chopped
• 3/4 cup oatmeal
• 1 tablespoon vinegar
• 1 lb lean ground beef, cooked and drained
• 1 (10 3/4 ounce) can 98% fat-free cream of mushroom soup
• salt and pepper, to taste