Simple Roasted Tomato Sauce with Fresh Tomatoes of All Types!

Simple Roasted Tomato Sauce with fresh tomatoes of all types

If you’ve been given an abundance of fresh garden tomatoes, this simple roasted tomato sauce is just the recipe you need to use them all up!

YouTube video
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I’m calling this simple roasted tomato sauce blog post a recipe, but honestly we (my 8 year old and I) threw this together without any measurements at all. If you’re the type that likes exact measurements, I will link the recipe that our sauce is loosely based on, here

Abundance of garden tomatoes used for homemade spaghetti sauce
Mother and son baking time recipe for homemade tomato sauce

This tomato sauce recipe is not designed for canning. We simply poured ours in a ball jar and plan to use it within the week. In fact we had so much of it that I froze half of it in a freezer bag to use for later! 

Ingredients we used – 

What kind and how many tomatoes?

We filled two large sheet trays with a variety of tomatoes, we even included cherry tomatoes which really helped to sweeten our sauce. 

Using a variety of tomato types for homemade roasted tomato sauce

If you watch the video above, you’ll see that we added ingredients to our liking. If you love onion and garlic, you can definitely add more! The same goes with basil, salt and pepper. 

The great thing about this sauce is that you can always add more seasonings once you plan on using it. I’ll probably use it for pasta, and when I reheat it on the stove I will taste it again to see if there’s anything else I’d like to include!

Steps to Simple Roasted Tomato Sauce

Wash and Dry Your Tomatoes

It’s important to pat dry your tomatoes so that they develop that beautiful caramelization as they roast in the oven. 

Washing and drying tomatoes for a homemade roasted tomato sauce

Cut Your Tomatoes If Needed

For the larger slicing tomatoes, we chopped them into wedges. But for the smaller size cherry tomatoes, we simply left them whole! Then we laid them all out onto two large sheet trays. 

Cutting tomatoes in cottage style kitchen to create a simple roasted tomato sauce recipe
Cutting up tomatoes for a quick and easy simple roasted tomato sauce

Add Your Seasonings 

We used one small onion for both trays, about 3 tablespoons of garlic, and then sprinkled the tomatoes liberally with basil, salt and pepper. Then we finished them off with a heavy drizzle of olive oil! 

seasonings used in easy homemade spaghetti sauce recipe

Roast Your Tomatoes 

We roasted our tomatoes at 425 for about 35 minutes, or until your tomatoes and onions start to caramelize and turn brown. 

Homemade simple tomato sauce recipe after roasting in oven
Quick and easy way to make homemade spaghetti sauce
Simple roasted homemade spaghetti sauce with tomatoes

Blend and Store

I used a slotted spatula to remove the tomatoes, onions and garlic from the tray so that most of the juices were left behind. If you like a thinner sauce, you could definitely include the tomato juice! 

Then we blended ours with an immersion blender and poured the fresh tomato sauce into a quart sized ball jar. I could not believe how much sauce just one tray of tomatoes gave us! 

Simple step by step homemade tomato sauce recipe
Mother and son creating simple roasted tomato sauce

Sweeten Your Simple Roasted Tomato Sauce if Desired 

Our sauce was honestly delicious as is, but I like a little sweetness to balance out the acidity. Rather than using refined sugar, we chose to add some raw honey! It sweetened the sauce perfectly and added so much flavor. 

Simple Roasted Tomato Sauce homemade in cottage style kitchen as a mother and son

I hope you enjoyed this simple roasted tomato sauce recipe! Truth be told, my 8 year old did most of the work! We can’t wait to use this sauce in our spaghetti tonight! 

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Simple Roasted Tomato Sauce with fresh tomatoes of all types


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  1. I worked in a tearoom and the owner made this every year when the garden was packed with tomatoes. We’d pile the roasted tomatoes on toasted Italian bread for lunch and we’d use it as a base for tomato soup. Thanks for posting this.

  2. Looks delicious! We did TONS of stewed tomatoes and tomato soup this year. I’m saving this roasted recipe for next season. Thanks for sharing it! And congrats to your son for a job well done!!

  3. Ethan is turning into quite the cook in the kitchen. I remember how he liked adding fresh herbs to things last year. Impressive knife skills for an 8 year olds this year! Great job narrating too! ☺️

  4. What a wonderful video! Ethan is a natural in the kitchen. Great job, Ethan. Your tomato sauce looks so delicious. You should be very proud of yourself! You, too, Mom!

  5. Harvest the last of our garden today and just used all our tomatoes onions peppers and basil to make this. It smells amazing.

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