Nadia Duriavig: Foodie Unplugged


Slow-Roasted Tomato Onion Garlic Sauce

Delicious Tomato Magic in a Jar

roasted tomato sauce

It’s that time of year again. Tomatoes are back! Tomatoes are my all time favourite food and every year about this time I get lost in the kitchen making all kinds of tomato based dishes. This is one of my regular-go-to-faithful recipes that begins to appear on my table a couple of times a week right about now. It’s super quick and easy (a requirement), with little prep and clean up and is simple to can if you want to save a little jar of summer magic for those colder winter months.

This is a favourite for pasta, but I’ve used it as a side for chicken, a base for pizza or risotto and a spread for crostini too. The combo of tomatoes, onions and garlic gets super sweet and sticky as it roasts down, really concentrating the flavours and creating a little piece of tomato heaven you won’t be able to get enough of.

Try it and I guarantee it will become one of your favourites too!

tomato sauce in a jar

makes about 2 cups

8 medium-large ripe tomatoes
1 dozen cloves garlic, peeled
2 large Spanish onions
1/3 cup olive oil
salt and pepper to taste
6 sprigs fresh thyme
2 handfuls fresh basil

roasted tomato sauce

 Heat oven to 350 degrees.

 Thickly slice tomatoes and onions. Spread tomatoes, onions, thyme and basil on a baking sheet lined with parchment paper.

 Tuck garlic cloves under tomato or onion slices. This is to ensure the garlic doesn’t burn during the roasting process or it will make your sauce bitter.

 Sprinkle with olive oil, salt and pepper.

 Cook for 60-75 minutes, until ingredients are browned and reduced.

 Scrape all ingredients and juices into a bowl or pan. Blend with your hand blender. Adjust seasoning to taste.


Sauce can be stored in the refrigerator for up to a week, or frozen or canned according to standard canning instructions.

Want to try a few of my other favourite summer recipes?

Herb Crusted Prosciutto and Arugula Stuffed Bread

Sweet Summer Tomato, Corn and Bacon Salad