Many home cooks, especially those just starting out, wonder about ingredient swaps. It’s super common to ask, “Can I use diced tomatoes instead of tomato sauce?” Sometimes you’re in the middle of a recipe, and you realize you don’t have what the recipe calls for. It can feel a little tricky, but don’t worry!
We’ll walk through it step-by-step so you can easily make this substitution. Let’s figure out how to make your dishes delicious, no matter what’s in your pantry.
Diced Tomatoes Versus Tomato Sauce
When you’re cooking, the type of tomato product you use can make a big difference. Diced tomatoes and tomato sauce are both made from tomatoes, but they are quite different in texture and how they are processed. This affects how they behave in recipes. Understanding these differences will help you know when and how you can swap them.
What Are Diced Tomatoes
Diced tomatoes are simply whole tomatoes that have been cut into small pieces. They are usually packed in their own juice or sometimes with a bit of tomato puree. The pieces are visible, and they retain some of their shape. This means they add texture to dishes. You can often find them with added seasonings, like basil or garlic, or plain. When you open a can, you’ll see distinct chunks of tomato. They have a fresher, brighter tomato flavor compared to pureed sauces.
What Is Tomato Sauce
Tomato sauce is made by cooking down tomatoes and then pureeing them until smooth. It’s much thinner and smoother than diced tomatoes. It often has seasonings added, like salt, pepper, onion powder, and garlic powder. Tomato sauce is designed to blend easily into other ingredients and create a consistent base for dishes like pasta sauces, soups, and stews. Because it’s already cooked and pureed, it’s ready to go and adds a rich, deep tomato flavor.
Can I Use Diced Tomatoes Instead Of Tomato Sauce
This is the big question for many cooks! The simple answer is yes, you often can, but there are things to consider. The key is to think about the final texture and consistency you want for your dish.
Texture Differences
Diced tomatoes will add chunks of tomato to your meal. If you want a smooth sauce, this might not be ideal on its own. Tomato sauce provides a smooth, velvety texture. If you are making a soup or a stew where you want visible pieces of tomato, diced tomatoes can work well. For a pasta sauce where a smooth finish is preferred, you might need to do a little extra work.
Flavor Profile
Both diced tomatoes and tomato sauce have a tomato flavor, but it’s not exactly the same. Diced tomatoes tend to have a brighter, fresher taste. Tomato sauce, because it’s cooked down more, often has a deeper, more concentrated flavor. If your recipe relies on a very specific tomato flavor, this difference could be noticeable.
Liquid Content
Diced tomatoes come packed in juice. This liquid contributes to the overall liquid in your dish. Tomato sauce is also liquid, but it’s more concentrated. When you substitute, you need to be mindful of how the extra liquid from diced tomatoes might affect your recipe, especially if it’s a baking recipe or something where precise liquid amounts are important.
How to Substitute Diced Tomatoes For Tomato Sauce
If you decide to use diced tomatoes when your recipe calls for tomato sauce, you can make it work! Here are a few ways to do it effectively.
Method 1 Blending Diced Tomatoes
This is the most common and effective method if you want a smooth sauce.
1. Open the can of diced tomatoes.
2. Pour the diced tomatoes and their juice into a blender or a food processor.
3. Blend until you reach your desired consistency. For a smooth sauce, blend until no large chunks remain. You might need to scrape down the sides a few times.
4. If you want a thicker sauce, you can simmer the blended mixture for a while to let some of the liquid evaporate.
This method essentially transforms your diced tomatoes into something very similar to tomato sauce in texture. You’ll still have the fresh tomato flavor, which can be great.
Method 2 Mashing Diced Tomatoes
If you don’t have a blender or food processor, or if you want a slightly less smooth sauce with some texture, you can mash the diced tomatoes.
1. Open the can of diced tomatoes.
2. Pour them into a bowl.
3. Use a fork or a potato masher to break down the tomato chunks. Mash them as much as you can.
4. You can also pour them into a sturdy zip-top bag and mash them with your hands or a rolling pin.
5. Add this mashed mixture to your recipe. It won’t be as smooth as pureed sauce, but it will be closer than using them whole.
This method is good for recipes where a perfectly smooth sauce isn’t critical, like chili or some casseroles.
Method 3 Using Diced Tomatoes As Is
In some recipes, using diced tomatoes directly instead of tomato sauce can be fine, especially if the recipe also calls for other liquids or if you don’t mind the texture.
Soups and Stews: Diced tomatoes are excellent in these dishes because they add body and chunks of tomato. You can usually substitute them directly without issue.
Chili: Many chili recipes benefit from the texture of diced tomatoes.
Casseroles: If the casserole is meant to be hearty and chunky, diced tomatoes can work well.
If the recipe calls for a specific amount of tomato sauce, and you are using diced tomatoes as is, be aware that you are adding more solid ingredients and potentially less liquid depending on how much juice is in the can and how much you drain.
Adjusting for Consistency and Flavor
Regardless of how you choose to substitute, you might need to make a few adjustments.
Thickening the Sauce
If you used diced tomatoes and found your sauce is too thin after blending or mashing, you can thicken it.
Simmering: This is the most natural way. Let the sauce bubble gently on the stovetop, uncovered, for 10-20 minutes or until it reaches your desired thickness. Stir occasionally.
Cornstarch or Flour Slurry: Mix 1 tablespoon of cornstarch or flour with 2 tablespoons of cold water. Stir this mixture into the simmering sauce and cook until it thickens. Use this method sparingly, as it can sometimes alter the flavor slightly.
Thinning the Sauce
If your recipe calls for tomato sauce and you’re trying to use diced tomatoes, and it turns out too thick (less likely, but possible if you’ve reduced it too much or if the diced tomatoes were packed very densely), you can add a little liquid. Water, broth, or even a bit more tomato juice can help thin it out.
Flavor Enhancements
Since diced tomatoes might have a slightly different flavor than your intended tomato sauce, you can often adjust the seasonings.
Sweetness: If the flavor seems too acidic, a pinch of sugar or a touch of honey can help.
Umami: A dash of soy sauce or Worcestershire sauce can add depth.
Herbs and Spices: Add fresh or dried herbs like basil, oregano, or thyme. Garlic and onion powder are also great additions.
When substituting, always taste your dish as you go and adjust the seasonings until it tastes right to you.
When to Be Cautious About the Substitution
While you can often use diced tomatoes instead of tomato sauce, there are times when it might not be the best choice.
Baking Recipes
In baking, ingredient ratios are often very precise. Tomato sauce can contribute moisture and a specific kind of richness to baked goods like quick breads or muffins. Using diced tomatoes might change the texture and moisture content in ways that negatively affect the final product. If a recipe specifically calls for smooth tomato sauce in baking, it’s usually best to stick to it or use an actual pureed tomato product.
Sauces Where Smoothness is Key
For recipes like a classic marinara where a completely smooth, emulsified sauce is the goal, using diced tomatoes directly without blending might not give you the desired result. While blending works, if the recipe’s success hinges on that specific smooth texture, starting with tomato puree or tomato sauce is better.
Specific Tomato Products
Some recipes might call for specific types of tomato sauce, like tomato puree or tomato paste. These have different concentrations and uses than standard tomato sauce. A substitution with diced tomatoes might not yield the same results in those cases.
Comparing Tomato Products
To help make informed decisions, here’s a quick comparison of common tomato products.
| Product | Texture | Common Uses | Substitution Potential for Sauce |
| : | : | : | : |
| Diced Tomatoes | Chunky, visible pieces | Soups, stews, chili, casseroles, chunky sauces | Good, with blending/mashing |
| Tomato Sauce | Smooth, pureed | Pasta sauces, soups, stews, base for many dishes | The standard for sauces |
| Tomato Puree | Thicker than sauce, less smooth | Sauces, soups, base for thicker dishes | Can be blended into a sauce |
| Tomato Paste | Very thick, concentrated flavor | Deepens flavor, thickens sauces and stews | Not a direct substitute for sauce|
| Crushed Tomatoes | Coarser than sauce, not fully smooth | Hearty sauces, soups, stews | Can be blended for a smoother sauce |
As you can see, diced tomatoes are a versatile ingredient. With a little preparation, they can often stand in for tomato sauce.
Frequently Asked Questions
Question: Will using diced tomatoes make my sauce chunky?
Answer: Yes, if you use them without processing them first, they will add chunks of tomato to your dish. To get a smooth sauce, you should blend them in a blender or food processor.
Question: How much diced tomato should I use if the recipe calls for one can of tomato sauce?
Answer: A standard 15-ounce can of diced tomatoes is usually a good substitute for a 15-ounce can of tomato sauce, especially after blending. You can adjust the amount based on the liquid content and your desired thickness.
Question: Can I use diced tomatoes in a recipe that calls for tomato paste?
Answer: No, this is not a good substitution. Tomato paste is very concentrated and thick. Diced tomatoes are much more watery and less concentrated, so they won’t provide the same depth of flavor or thickening power.
Question: What if I don’t have a blender to make diced tomatoes smooth?
Answer: You can mash the diced tomatoes with a fork or a potato masher in a bowl. While it won’t be as smooth as blended sauce, it will still work for many recipes, especially stews and chilies.
Question: Can I use diced tomatoes in my spaghetti sauce?
Answer: Yes, you absolutely can! To get a smooth sauce, blend the diced tomatoes first. If you like a little texture in your spaghetti sauce, you can mash them or even use them as is, depending on your preference.
Final Thoughts
You can definitely use diced tomatoes when a recipe calls for tomato sauce. The key is to think about the texture you want. For a smooth sauce, blend or mash the diced tomatoes before adding them. This simple step turns those chunky tomatoes into a smooth base for all your favorite dishes. Don’t let a missing ingredient stop you from cooking; with a little adjustment, diced tomatoes are a fantastic substitute. You’ve got this!