Heat avocado oil in a large pot over medium-high. Add the peppers, celery, onion and garlic and cook, stirring every couple of minutes until nearly softened (about 10 minutes).
Stir in the seasonings and crushed tomatoes.
Reduce to medium heat, cover and allow to simmer for 30 minutes, stirring every 3-5 minutes.
Meanwhile, prepare pasta or another side for serving.
Serve. Taste and add additional salt if needed.
Notes
LeftoversStore leftovers in an airtight container in the refrigerator for up to 4 days or freeze for up to 3 months.Rewarm on the stove over medium heat for 5-10 minutes or in the microwave until heated through, adding a splash of water if needed.*Nutrition calculation does not include pasta or optional protein.