Mom's Mucked Up Hamburger

Ingredients

• 1 tsp olive oil
• 1 lb extra lean ground beef
• 2 cups onion, chopped (1 large onion)
• 4 garlic cloves, crushed
• salt and pepper, to taste
• 28 oz canned whole tomatoes (1 can)
• 1 cup celery, chopped (2–3 stalks)
• 1 cup red bell pepper, sliced into strips (1 medium pepper)