Yum - this version is made with canned San Marzano tomatoes - and if ur gonna use canned, these ones are the best.
1 tablespoon olive oil
1 large yellow onion, thinly sliced
1 clove garlic, minced
1-28 ounce can whole peeled tomatoes (San Marzano, recommended)
½ teaspoon Kosher salt
¼ teaspoon sugar
¼ teaspoon red pepper flakes
¼ teaspoon dried oregano
Heat oil in a medium saucepan, add half the onion and cook until softened
Put in garlic and stir until fragrant, then add tomatoes, salt, sugar, red pepper flakes and oregano, mix well and simmer 5 – 10 minutes
Use a blender or immersion blender to puree soup - keep warm
