Sauce: Sauté garlic in butter until golden brown. Gradually stir in flour, milk and water. Add 1/2 tsp iodized rock salt. Mix until smooth. Add Spaghetti Sauce. Cook for 5 minutes with continuous stirring. Set aside.
Filling: Sauté onion and squid in oil. Cook for 10 minutes or until tender. Add carrots, green peas, 1 tsp iodized rock salt, 1/4 tsp pepper and bell peppers. Cover and simmer for 10 minutes. Stir in green onions.
Layer half of cooked Spaghetti in a square (8" x 8") baking pan. Spread half of filling, sauce and cheese. Repeat with remaining half. Bake in a preheated oven at 350ºF for 25 minutes.