Heat olive oil in casserole or pan. Add minced garlic, finely chopped onion and saut it till golden brown.
Add diced tomato, tomato puree, black pepper powder, oregano, crushed red pepper flecks, salt and bay leave.
Cook all ingredients with continue stirring on medium flame till sauce become thick.
Once it starts thickening little bit, add chopped parsley, basil spring and cook it again for 3-4 minutes.
Remove it from the flame. Once cool down discard the bay leave.
Now Homemade Classic Marinara Sauce is ready to use immediately or store it into an airtight jar for up to 1 week.