Add in the crushed tomatoes, diced tomatoes, apple cider vinegar, sugar, 1 teaspoon of salt, Italian seasoning, ¼ teaspoon ground pepper, and cinnamon. Turn the heat to high until the mixture starts to bubble. Then, turn down to low and simmer for 15 minutes.
28 ounces crushed tomatoes, 14.5 ounces diced tomatoes, 1 tablespoon apple cider vinegar, 1 tablespoon granulated sugar, 2 teaspoons kosher salt, ½ teaspoon Italian seasoning, ½ teaspoon ground black pepper, ⅛ teaspoon ground cinnamon