World's Best Marinara

Heat olive oil in a saucepan over medium heat; cook and stir onion and garlic until fragrant about 2 minutes. Add mushrooms red bell pepper and parsley; cook and stir until mushrooms are slightly softened about 2 minutes. Add oregano sugar basil rosemary sage red pepper flakes salt and black pepper; stir to combine 2 minutes.

Stir tomato sauce into seasoned onion-mushroom mixture; cook over low heat until flavors have combined 30 minutes.

Transfer half the sauce to a blender; blend until smooth. Return to saucepan with the remaining sauce; stir to combine.