In a large pot or dutch oven, saute onions in EVOO, add onions, oregano, Italian seasoning, dash of salt and pepper (can add diced carrots, peppers, mushrooms- if using). Add all the tomatoes and tomato paste. Stir and mix well. Add ½ of the fresh basil and roasted garlic (if using minced garlic add when sauteing onions).
Add water (use an empty can to get the last bit of tomatoes). Stir, add broth. Bring to a boil, then simmer for at least 10mins.
Optional- Using an immersion blender, blend the sauce to a desired consistency (we like slightly chunky sauce).
Add rest of the fresh basil and lemon juice. Stir and simmer for 30 mins. The longer the simmer, the better. Add optional add ins, like carrots, jalapenos, chopped spinach, or peppers.
Sauce will taste best the next day. Store in 2 large mason jars. Add to your favorite Italian dish.
Notes
Don't worry about exact measurements. Use diced or crushed tomatoes, as much or as little as you have. You really can't mess up this recipe.