Substitute for 2 Tablespoons of Tomato Paste, Explained

For a substitute for 2 tablespoons of tomato paste, simmer 1/4 cup (60 ml) of tomato sauce until it reduces to about 2 tablespoons (30 ml). This quick stovetop swap concentrates the sauce’s tomato flavor and thickens it, making it useful in soups, stews, sauces, and other dishes that call for tomato paste.

Tomato sauce is less concentrated and contains more water than tomato paste, so using it straight can thin a recipe. Reducing it first gives you a closer match; when there’s no time to cook, a few pantry alternatives can work with small adjustments.

Ingredients

1/4 cup (60 ml) plain tomato sauce

Instructions

Measure the tomato sauce into a small saucepan. A small pan helps the sauce evaporate evenly without spreading into a very thin layer.
Set the saucepan over medium-low heat and bring the sauce to a gentle simmer. Cook for 8 minutes, stirring often and scraping the bottom and corners so the sauce does not catch.
Check the consistency and volume. It should be thick, glossy, and reduced to about 2 tablespoons (30 ml). If it is still runny, continue simmering in 1-minute increments, stirring frequently, until it is thick enough to leave a brief trail when you draw a spoon through it.
Use the reduced sauce in place of 2 tablespoons of tomato paste in your recipe. If you are adding it to a dish already simmering, stir it in where the tomato paste would have gone and let it cook with the other ingredients.

Tips

Use plain sauce when possible. Tomato sauce with added herbs, garlic, onion, sugar, or salt can change the flavor of the finished dish. If seasoned sauce is what you have, it can still work, but taste the dish before adding extra salt or dried herbs.
Keep the heat gentle. A hard boil can splatter and scorch the tomato solids before the water has evaporated. Stirring regularly is especially important near the end, when the sauce thickens quickly.
Measure by volume after reducing. Pan size, heat, and the thickness of the sauce affect how quickly it cooks down. The goal is about 2 tablespoons of thick sauce, not a rigid cooking time if your pan needs an extra minute.
Think about the rest of the recipe. Tomato paste is often cooked briefly in oil to deepen its flavor. If your recipe calls for that step, add this substitute at the same point and cook it with the aromatics for a minute before adding liquid.

Serving Suggestions

This substitute is designed to stand in for tomato paste as an ingredient, rather than to be served on its own. Stir it into a pot of soup, chili, or stew to add concentrated tomato flavor, or mix it into the base of a pasta sauce, braise, curry, or pan sauce. It also works in recipes for meatballs, lentils, beans, and casseroles when the recipe uses tomato paste to build a savory base.

For a recipe that starts by frying tomato paste with onion or garlic, add the reduced sauce after the aromatics have softened. Cook it for about a minute, stirring, then continue with the recipe. Because this substitute may be a little less concentrated than commercial paste, allow the finished dish to simmer uncovered if it seems thinner than intended. Avoid adding a large amount of extra salt or seasoning just to make up for a difference in flavor; taste the dish once it has simmered.

Variations

Tomato puree or passata: These are often smoother and thinner than tomato paste, much like tomato sauce. Reduce 1/4 cup (60 ml) to about 2 tablespoons (30 ml) using the same method. Passata is typically strained, so the result may have a smoother texture. Check the label, since products vary in thickness and seasoning.

Canned crushed or diced tomatoes: Drain the tomatoes well, then blend or mash them until smooth. Measure 1/4 cup (60 ml) and reduce it in a small saucepan to about 2 tablespoons (30 ml). The texture may remain slightly less smooth than tomato paste, especially if the tomatoes contain seeds or pieces of skin. This is a practical option for soups and stews, where a perfectly smooth finish is not essential.

Ketchup: In a pinch, use 1 tablespoon (15 ml) of ketchup in place of 2 tablespoons of tomato paste. Ketchup is already thick, but it is sweeter, tangier, and usually more seasoned, so it is not a direct flavor match. This smaller amount can work in a sauce or stew that can accommodate its sweetness. Taste before adding sugar, vinegar, or additional salt.

Sun-dried tomatoes: For a deeper, sweeter tomato flavor, blend 1 tablespoon (about 8 g) of oil-packed sun-dried tomatoes with a little of their oil until smooth. The result will be more textured and noticeably richer than tomato paste; it is best in hearty sauces, braises, and spreads. If using dry-packed tomatoes, soak them in hot water until softened, drain well, and blend. This option changes the flavor more than the reduced-sauce method.

Tomato powder: If you keep tomato powder, mix 1 tablespoon (about 6 g) with enough water to make a thick paste, adding the water gradually. Products differ in strength, so check the package directions and adjust until the mixture resembles paste. It is convenient when you want a concentrated tomato flavor without simmering, but the texture and seasoning can vary by product.

Storage and Reheating

For best results, use the reduced sauce right away. If you have leftovers, transfer them to a clean, covered container and refrigerate within 2 hours of cooking. Store it in the refrigerator for up to 3–4 days. Since this is a small quantity, a small airtight container or covered ramekin helps limit drying and keeps it from picking up odors.

You can freeze the substitute in a sealed container for up to 2–3 months for best quality. A small portion may be easier to thaw than a full batch; leave room in the container for expansion. Thaw it in the refrigerator, or stir it directly into a hot soup or sauce if the recipe allows. Reheat it gently in a small saucepan or microwave-safe dish, stirring as needed, until hot throughout. If it has been mixed into a larger leftover dish, reheat that dish to 165°F (74°C). Discard the substitute if it has been left at room temperature for more than 2 hours.

Frequently Asked Questions

Can I use tomato sauce instead of tomato paste without reducing it?

You can, but it will add more liquid and less concentrated tomato flavor. For a recipe that needs only 2 tablespoons of paste, reducing 1/4 cup (60 ml) of sauce to about 2 tablespoons gives a closer match. If you use sauce as-is, reduce another liquid in the recipe slightly or simmer the finished dish uncovered until it reaches the consistency you want.

What is the easiest substitute if I do not have time to simmer sauce?

Ketchup is a convenient thick option: start with 1 tablespoon (15 ml) in place of 2 tablespoons of tomato paste. It brings sweetness, acidity, and seasoning, so it will change the flavor. Tomato powder mixed with water to a thick consistency can be another quick option if you have it and the package directions support that ratio.

Will this recipe work in a slow cooker?

It is better to reduce the sauce separately on the stovetop. A slow cooker’s covered cooking environment traps moisture, so the sauce may not thicken enough to replace tomato paste. If you cannot use a stovetop, you can use a thicker pantry alternative such as tomato powder paste, or add the sauce to the slow cooker and account for the extra liquid in the final texture.

How can I tell when the tomato sauce has reduced enough?

It should measure close to 2 tablespoons (30 ml), look thick rather than watery, and cling to a spoon. Dragging a spoon across the pan should leave a trail that closes slowly instead of immediately filling with liquid. If it is still loose, simmer it for another minute and check again; avoid raising the heat sharply to speed things up.

Can I make a larger amount for later?

Yes. Keep the same ratio—2 parts tomato sauce to 1 part tomato-paste replacement by volume—and reduce the sauce until it has lost about half its volume. A larger batch may take longer, particularly in a narrow pan. Refrigerate it within 2 hours and use it within 3–4 days, or freeze it in measured portions for up to 2–3 months for best quality.

Does this substitute taste exactly like tomato paste?

It is close in purpose, but not identical. Reducing plain tomato sauce makes it thicker and more concentrated, though its flavor may be milder than commercial tomato paste. The difference is usually easiest to notice in recipes where tomato paste is a prominent ingredient; in a seasoned soup, stew, or sauce, the other ingredients help blend the flavors.

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