Tomato Sauce With Diced Onions

• 5 tablespoons butter
• 1 small onion, diced
• 2 teaspoons minced garlic
• 28 oz can crushed San Marzano tomatoes
• Salt to taste
• Fresh ground pepper to taste
• Red pepper flakes to taste
• Pasta of choice
• Shaved Parmesan to top

1. Melt butter in a skillet over medium heat and add diced onions. Cook, stirring often, for 5-7 minutes until onions are translucent. Add garlic and cook for another minute, stirring frequently so the garlic doesn't burn.
2. Add canned tomatoes, salt, pepper, and red pepper flakes to the saucepan and stir to mix well. Bring to a simmer and cook for 45 minutes, stirring occasionally. Taste and correct seasoning if needed.
3. While sauce is simmering, cook pasta according to directions and drain. Stir pasta into the finished sauce and toss well. Serve with shaved Parmesan cheese.

butter, onion, garlic, tomatoes, salt, fresh ground pepper, red pepper, pasta of choice

Taken from food52.com/recipes/81184-tomato-sauce-with-diced-onions (may not work)