Add the oil, and begin cooking the onions and bell pepper. Cook for about 5-6 minutes until the onions have softened.
Leftovers can be stored in a sealed container for 4-5 days. If you want to reheat it, you can microwave it with 1-3 teaspoons of water depending on the amount of pasta.
You can make the recipe entirely in advance, and wait for it to cool before wrapping it. Freeze it for 3 months and then thaw. reheat in a 350 degree oven, covered with 1/4 cup of water for 20 minutes.
To make in advance, you can prepare the meat sauce up to 3 days in advance. On the day of serving, cook the spaghetti, toss it in, bake and serve.
Your favorite salsa! Pineapple Salsa or Mango Pico De Gallo for a sweet kick! Air Fryer Garlic Bread to dunk in, or Pita Chips. Corn Ribs for a side veggie dish. Mexican Lentil Salad for a hearty bright salad side dish.