Cook spaghetti per package direcions.
Combine milk and egg, mix well.
Combine drained spaghetti, milk and egg; mix well.
Pour spaghetti mixture into a buttered 9X13 inch casserole dish.
Brown ground beef with onion, bell pepper and garlic in a large skillet; drain.
Return drained meat back into the skillet and add seasonings; Cook for 2 minutes. Stir in tomato sauce and cook for 2 more minutes. Spread meat mixture over spaghetti. Sprinkle with cheese.
Bake at 425°F for 10 minutes or until cheese melts and is bubbly.
Remove from oven and let stand for 10 minutes.
Please Note: Nutritional values listed may vary from final results depending on actual measurements and brands used to prepare the recipe.