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Roasted Tomato Sauce

A delicious and versatile condiment made with fresh roasted tomatoes, garlic, and herbs, perfect for pasta dishes, soups, or pizza bases, and can be preserved safely through canning.
Prep Time 30 minutes
Cook Time 1 hour 25 minutes
Total Time 1 hour 55 minutes
Course Condiment, Sauce
Cuisine Italian
Servings 10 servings
Calories 80 kcal

Ingredients
  

Vegetables

  • 23 pounds tomatoes (a variety of paste, heirloom, and cutting provides the best flavor & consistency) Use fully ripe tomatoes for best flavor.
  • 3 cups chopped onions
  • 6 medium cloves garlic (chopped)

Seasonings and Oils

  • 2 tablespoons olive oil
  • 2 tablespoons balsamic vinegar (optional) Adds amazing flavor.
  • 2 tablespoons canning salt (or pure sea salt) Use a salt with no additives.
  • 1 tablespoon dried oregano Adjust to taste.
  • 1 tablespoon dried basil Adjust to taste.
  • 2 teaspoons black pepper Adjust to taste.
  • 1 teaspoon crushed red pepper flakes (optional) Adds heat.

Preservation

  • 1/4 teaspoon citric acid Add to pint jars (1/2 teaspoon to quarts).
  • 1 tablespoon bottled lemon juice Add to pint jars (2 tablespoons for quarts).

Instructions
 

Preparation

  • Heat your oven to 425 degrees Fahrenheit.
  • Halve all ingredients to work in two batches. Divide the olive oil, balsamic vinegar (if using), onions, garlic, and dry seasonings between 2 or 3 roasting pans.
  • Wash the tomatoes, remove the cores and blossom ends, then cut them in half and gently squeeze out some seeds. Place them cut side down in the prepared pans.

Roasting

  • Roast the tomatoes for about 40 minutes until most of the skins are puffed and browned. Remove from the oven and use tongs to pluck off the skins.
  • Scrape the roasted vegetables into a large stockpot, set aside, and repeat the prep and roasting with the remaining half of the ingredients.

Blending and Cooking

  • Using an immersion blender, blend the roasted ingredients until smooth.
  • Bring the smooth sauce to a boil over medium-high heat. Lower the heat and simmer until it reaches your desired consistency, stirring often. This can take about 45 minutes to 1 hour or more.

Canning

  • Prepare your water bath canner, jars, and lids.
  • Add citric acid or lemon juice, ladle the hot tomato sauce into hot jars, each leaving 1/2-inch headspace. Wipe the rims, attach lids, and place them in the canner rack.
  • Process for 35 minutes for pints and 40 minutes for quarts. Start the processing time after the canner reaches a full boil.

Cooling

  • Turn off the burner, remove the lid, and let jars rest in the canner for 5 minutes. Transfer jars to a towel-lined surface and let them cool for 24 hours.
  • Check seals, label, and store for up to a year.

Notes

Experiment with different herbs to customize the flavor. Always check the seals on your jars before storing. Make sure to use fully ripe tomatoes for the best flavor.
Keyword Canned Sauce, Homemade Sauce, Roasted Tomato Sauce, Tomato Preservation, Water Bath Canning