Are you looking for a way to take your spaghetti sauce from thin and watery to rich and creamy? If so, you’ve come to the right place. In this blog post, we will share our tested tips on how to thicken spaghetti sauce for that perfect level of consistency. Whether you’re trying out a new recipe or have made a batch of sauce too thin, these step-by-step instructions are easy to follow and will help you get it just right every time!
Contents
- 1 What Is Spaghetti Sauce?
- 2 How To Make Spaghetti Sauce?
- 3 Does Spaghetti Sauce Need to Be Thick?
- 4 Why Spaghetti Sauce Is Not Thick?
- 5 7 Ways to Thicken Spaghetti Sauce
- 6 How To Make Spaghetti Sauce Not Watery?
- 7 Conclusion: How To Thicken Spaghetti Sauce?
- 8 FAQ: Thicken Spaghetti Sauce
- 8.1 How do you thicken a sauce that is too thin?
- 8.2 How do you thicken spaghetti sauce with flour?
- 8.3 How do you thicken spaghetti sauce without flour?
- 8.4 Why is my spaghetti sauce not thickening?
- 8.5 How do chefs thicken a sauce?
- 8.6 Does sugar thicken spaghetti sauce?
- 8.7 Will simmering sauce thicken it?
- 8.8 What is the healthiest way to thicken a sauce?
- 8.9 How can I thicken my spaghetti sauce if I don’t have tomato paste?
- 8.10 Will covering a sauce make it thicker?
- 8.11 What are the 2 commonly used thickeners in making sauce?
What Is Spaghetti Sauce?
Spaghetti sauce is a tomato-based sauce commonly used to dress pasta dishes. It can be made with fresh or canned tomatoes and may contain additional ingredients such as garlic, onion, oregano, red wine, and herbs. Spaghetti sauces are usually cooked before serving; however, some recipes call for uncooked sauce.

How To Make Spaghetti Sauce?
Making spaghetti sauce is relatively easy. All you need are tomatoes, garlic, onions, oregano, and other herbs. Start by sautéing the garlic and onions in some olive oil until they’re soft. Next, add the tomatoes and oregano and simmer for about 20 minutes or until the sauce has reduced slightly. Lastly, add the remaining ingredients and season to taste.
Does Spaghetti Sauce Need to Be Thick?
The answer to this question is subjective, as everyone has different preferences when it comes to how thick or thin their spaghetti sauce should be. Generally speaking, though, most people prefer a thicker sauce for pasta dishes because it sticks better to the noodles and gives them more flavor.
Why Spaghetti Sauce Is Not Thick?
There are a few common reasons why spaghetti sauce may not be as thick as you’d like. One possibility is that you added too much liquid (such as water, tomato juice, or stock), which can dilute the flavor and make the sauce thinner.
Another reason could be that your recipe does not have enough thickening ingredients (such as cheese, butter, flour, or cornstarch). Finally, if you are using canned tomatoes, the tomato puree may not be concentrated enough to create a thick sauce.

The below part will help you find out how to thicken spaghetti sauce in different ways.
7 Ways to Thicken Spaghetti Sauce
Once you have identified why your sauce is too thin, you can take the following steps to thicken it up. Here are 7 ways how to thicken spaghetti sauce.
Simmer Your Sauce
One of the simplest ways to thicken spaghetti sauce is to let it simmer on low heat for a longer period of time. For a silky-smooth sauce, take your time and simmer with care. Make sure to leave the lid off during this step so that extra moisture can evaporate; stirring regularly will help as well. This will help to evaporate some of the liquid and reduce the sauce.
Add A Roux
Unlock a rich, thick texture to your spaghetti sauce with the addition of roux. Roux is a classic French technique, simply consisting of equal parts butter and flour that’s added to pans heated at medium heat – making it easy for even novice cooks! Sprinkle in the ingredients slowly until you’ve reached just the right consistency.
To achieve a velvety spaghetti sauce, add small amounts of roux while the pot is still warm. Whisking until it starts to bubble ensures that all elements mix together impeccably. The extra effort pays off in flavor!
Add Cornstarch
Cornstarch is a great way to quickly thicken up your spaghetti sauce. Start by dissolving the cornstarch in cold water and then add it to the simmering sauce. Be sure to mix it in thoroughly and let it simmer for at least 10 minutes so that the starch can activate and thicken the sauce.
The taste of cornstarch won’t be noticeable but it’s a pretty strong thickening agent. Adding too much can ruin the sauce’s consistency so make sure you add in just a little bit at a time. You don’t want a gooey mess!
Add Mashed Potatoes
Mashed potatoes are a surprisingly effective way to thicken spaghetti sauce. All you need to do is mash up some boiled potatoes and add them to your simmering sauce. The starch in the potatoes will help thicken it up while also adding more flavor.
Be sure to add the mashed potatoes slowly and stir constantly so that they don’t clump up. You can also try adding other cooked vegetables, such as carrots or squash, to thicken the sauce and add some extra nutrition.

Cook Your Pasta In The Sauce
If you’re running low on time and still need to thicken up your spaghetti sauce, try cooking the pasta directly in the sauce. Allowing the noodles to cook in the simmering sauce will help absorb some of the liquid, leaving it thicker and more flavorful.
Just make sure not to overcook the pasta! You want it to be al dente so it still has some texture and bite.
Add Vegetables
Adding more vegetables to your sauce can help thicken it up. Try adding some sautéed mushrooms, onions, or bell peppers for additional flavor and texture. These will give the sauce more body as well as added nutrition.
Add Ground Beef Or Sausage
Ground beef or sausage are both excellent options for thickening spaghetti sauce. The fat and protein in the meat will help give the sauce more body and flavor, resulting in a richer taste.
For an even heartier dish, try adding diced tomatoes, olives, capers, or roasted peppers to your recipe. All of these ingredients have enough liquid to help thicken the sauce.
Finally, if all else fails, you can always add more cheese! Grated Parmesan or Romano are great options for adding flavor as well as a creamy texture. So there you have it—seven different ways to thicken spaghetti sauce and make your next dish even better! With any of these techniques, your sauce will be sure to impress.
Watch this video to know how to thicken spaghetti sauce better.
How To Make Spaghetti Sauce Not Watery?
If you find yourself with a watery spaghetti sauce, there are a few easy tricks to correct the issue.
- Firstly, make sure to simmer the sauce over low heat for an extended period of time. This will allow some of the extra moisture to evaporate, resulting in a thicker consistency.
- Secondly, add ingredients like roux and cornstarch to help thicken the sauce.
- Finally, you can add mashed potatoes or cooked vegetables to absorb some of the excess liquid and give the sauce more body.
- For an even heartier dish, try adding diced tomatoes, olives, capers, or roasted peppers to your recipe. All of these ingredients have enough liquid to help thicken the sauce without making it too thick. Additionally, adding more vegetables such as sautéed mushrooms, onions, and bell peppers can also help thicken up the spaghetti sauce without overpowering its flavor.
With a little bit of patience and these techniques, it’s easy to create a delicious spaghetti sauce that is not watery!

Conclusion: How To Thicken Spaghetti Sauce?
Now you know how to thicken spaghetti sauce. Making a thick, flavorful spaghetti sauce doesn’t have to be complicated. With the right ingredients and techniques, you can create a delicious dish in no time. With these methods and tips, you’ll be sure to create a delicious and perfectly-thickened spaghetti sauce! Thanks for reading at mollysmtview!
FAQ: Thicken Spaghetti Sauce
How do you thicken a sauce that is too thin?
Enjoy a delicious, rich, and creamy steak sauce by adding flour-based thickeners like slurry or beurre manie! Crafted with equal parts water (for the former) and softened butter/flour mix (in the case of the latter), these are quick remedies to get that perfect thickness for your sauces.
How do you thicken spaghetti sauce with flour?
Create a smooth, velvety texture to your sauce by expertly combining 2 tablespoons of flour with every 1/4 cup of cold water. Then add this mixture over medium heat and stir until you have achieved the perfect consistency for culinary perfection!
How do you thicken spaghetti sauce without flour?
If a recipe calls for flour to thicken sauces or soups, why not try cornstarch or arrowroot instead? Not only are they delicious and gluten-free alternatives, but with one tablespoon per cup of liquid, you can also achieve that perfect clarity desired in many recipes. For best results create a slurry by mixing the starch with equal parts water before adding it into your pot!
Why is my spaghetti sauce not thickening?
Struggling to get your pasta sauce just right? If it’s too liquid, the culprit could be that there is not enough starch present. Fortunately, adding some of the water used for boiling pasta can help give your dish a thicker consistency – simply let simmer after you’ve added in this ingredient, and voila!
How do chefs thicken a sauce?
Thickening a sauce to the perfect consistency can be tackled in several ways. For an effort-free solution, try adding cornstarch for immediate results with a glossy finish. If time is on your side and you’re willing to pull out another pan, whipping up some roux will do the trick! Finally, if seeking something between these two extremes lies at the heart of your mission – look no further than Beurre Manié; it’s a quick yet effective option that yields delectable results without fail every single time.
Does sugar thicken spaghetti sauce?
Enhancing that secret ingredient, the pinch of sugar – whether white or brown – adds a flavor-filled finishing touch to the sauce simmering away on your stovetop.
Will simmering sauce thicken it?
Experience a richer flavor in your sauce by reducing the liquid content through careful simmering. Taking anywhere from 5 to 20 extra minutes of cooking time, keep an eye on the pot and stir frequently for richly-flavored results.
What is the healthiest way to thicken a sauce?
Enhance the flavor of your meals while still staying healthy by using vegetable purees, whole-wheat flour, barley, flaxseed, and oat flour instead of less nutritious options like cornstarch to thicken your favorite sauces! Not only are these alternatives lower in carbohydrates but they also provide essential nutrients that can add up to a more balanced diet.
How can I thicken my spaghetti sauce if I don’t have tomato paste?
For a stress-free sauce thickening experience, corn starch slurry comes to the rescue! In just two easy steps – combine equal parts of cornstarch and water (2-3 tablespoons each) in a bowl followed by whisking until smooth – before stirring it into your desired sauce.
Will covering a sauce make it thicker?
Unlock the full potential of your soup, stew, or sauce by forgoing a lid! This will aid in reducing and thickening the liquid while simultaneously enhancing its flavor; as you let it simmer away, evaporation is naturally increasing concentration.
What are the 2 commonly used thickeners in making sauce?
Roux is a classic combination of flour and fat, traditionally cooked together to form an integral base for many dishes. Liaison offers the perfect finishing touch – thickening and enriching sauces or soups with its specially blended mixture of heavy cream and eggs.

Bobby Kelly is a bartender at Molly Magees, an Irish pub in Mountain View. He’s been working there for two years and has developed a following among the regulars. Bobby is known for his friendly demeanor and great drink specials. He loves interacting with customers and making them feel welcome. When he’s not at work, Bobby enjoys spending time with his friends and family.