Tomato Sauce with Onion and Butter


Growing up my family and I ate a lot of pasta with red sauce. My mom and grandma always spent the better part of Sundays cooking red sauce. It wasn’t something that could be made quickly. When I saw this sauce only took 45 minutes I was skeptical.  This is no substitute for my mom’s sauce but it’s a nice change of pace. The original recipe did not call for garlic. But what would red sauce be without garlic? I’d rather not know.

Also, I don’t use as much butter as the original recipe calls for and I use more tomatoes. We prefer it this way.

I like to serve this with mini farfalle, but basically any pasta would work.

Ingredients Tomato Sauce with Onion and Butter


Here’s what you’ll need. Oops-forgot the pepper.

Cut onion in half and mince garlic

Melt butter over low heat

Add the garlic…

and the onion…

and the tomatoes

Simmer for 45 minutes

Remove onions and reserve for later

Season with salt…

and pepper

Mash the Tomatoes

Break up the tomatoes with a potato masher or wooden spoon

I like to freeze the sauce and take it out the night before


Buon Appetito!


Tomato Sauce with Onion and Butter

Prep Time 5 minutes
Cook Time 45 minutes
Total Time 50 minutes
Course Side Dish


  • 2 28 oz cans of whole peeled San Marzano tomatoes
  • 5 tbsp unsalted butter
  • 1 medium-sized yellow onion, peeled and halved
  • 4 cloves garlic, minced
  • kosher salt and pepper to taste


  • Melt butter in medium size saucepan; add garlic and sauté until fragrant. Add onion halves and tomatoes. Simmer for 45 minutes, stirring occasionally. Remove the onion halves but reserve them for later. Season sauce with salt and pepper.
  • Crush the tomatoes with a wooden spoon or potato masher. Serve with pasta or your choice.


The first time we made this we didn’t care for it, but we had leftover sauce, which we froze. A few weeks later we ate the frozen batch and loved it. Now I double the recipe and separate it into glass containers to freeze. When I separate the sauce into bowls I make sure to put an onion into each bowl. It’s very convenient for weeknight meals.
Keyword pasta, Sauce