How To Thicken Spaghetti Sauce – 9 Ways To Save Your Dinner

Over the centuries, Italian cuisine has crossed its borders. The diversity and the richness of differences in taste have made Italian culinary culture spread far and enchant food lovers worldwide.

Along with Pizza, Gelato, and Panna Cotta, Pasta is the most wonderful dish in this beautiful European country. Until now, tomato sauce spaghetti remains one of the most popular dressings worldwide for its healthiness and deliciousness.

Yet, make spaghetti sauce can be a difficult task: what if you use too little or too much tomato paste to thicken tomato sauce? Be mindful that too much water can turn your dish into watery spaghetti! You don’t want any watery spaghetti sauce for your meal, right?

How to adjust the consistency of your sauce – thick, thin, or somewhere in between? How to thicken spaghetti sauce, then? In this blog post, we’ll cover all the tips for thickening this tasty dressing. Read on for more information!

Why Is My Spaghetti Sauce Watery?

Why Is My Spaghetti Sauce Watery

Spaghetti sauces need to be thick, right? Then why is it watery? There are two primary explanations for this issue: The residual water and the lack of noodle starch.

For many people, the residual water is the most prevalent issue. Recall the last time you have made the recipe for spaghetti sauce without meat and ask yourself if you rinsed the cooked pasta properly? Or are you just taking undercooked pasta right off the pot and putting them in the sauce?

Specifically, be aware that water generated from tomatoes throughout the cooking process can make the sauce’s texture go watery.

Excessive water can destroy the natural texture and produce a flushed canned spaghetti sauce recipe. So, make sure to rinse all water off before you start!

The second reason is that the starch in the noodles is lost during the bottlenose process. No matter how hard you try, the starch loss is inevitable. Do not worry too much, as there are still ways to thicken spaghetti sauce! Scroll down to see the solutions if you need to thicken your sauce!

How To Thicken Spaghetti Sauce?

Are you thinking, “how can I thicken spaghetti sauce” and don’t know what to do? Calm down because we are here today to guide you on how to make homemade spaghetti sauce thicker.

1. Using Cornstarch


The first thing that comes to our mind when mentioning this issue is corn starch. This product is a culinary wonder since it can solve this problem in an instant.

In detail, cornmeal is a fine powder produced from the center of dried maize kernels with high adhesive properties. The right amount of cornstarch can solve all your problems. Don’t worry too much since it does not alter the natural flavor or color in your delicious spaghetti sauce canning recipe.


  • In a small bowl, add 2 tbsp of cornstarch in cool water. Mix with a fork until the mixture is loose and there are no lumps left.
  • Pour this mixture into your spaghetti sauce right into the spaghetti sauce, then stir for a minute or two.

2. Using Roux


Another popular answer to the question: “how to thicken fresh tomato sauce” is to make a roux!

Roux is a flour-based sauce with fats such as butter, oil, and lard. Adding roux to a canned homemade spaghetti sauce recipe will make sauce stick to pasta, creating a smooth texture and a delicious flavor!

The taste of roux is particularly distinctive and carries the essence of French cuisine.


  • 1 cup of flour and 100 grams of butter
  • Heat a pan, add butter or other fats, and boil them properly. When the fat begins to boil, add the flour to the saucepan.
  • Use a whisk to stir continuously to ensure the dough will not become lumpy and dissolve evenly in the fat. Boil for 5-10 minutes. 

3. Using Mashed Potatoes

Mashed Potatoes

Adding starch, as mentioned above, is the best way to thicken spaghetti sauce because it absorbs water very well. Most mashed potatoes are starch, and it works perfectly as an absorbent. You may use it as one of the ways to thicken spaghetti sauce.

Although you possibly alter the sauce’s flavor in this method, you can still fix it by adding more seasoning. Start with 1/2 cup of mashed potatoes first, and gradually add one after another until the texture is right.

4. Using Tomato Paste

Tomato Paste

Does tomato paste thicken sauce? The answer is yes, absolutely!

One method of thickening spaghetti sauce advises us to add more solids such as thick tomato-based. Many people may get confused because tomatoes are quite liquid, not even close to being thick.

Yet, this is not a big problem since the tomato and the flesh is still fairly much within and will replace the extra water in your saucepan.

When you add tomato paste in spaghetti sauce, the water will gradually evaporate, thicken, and your dish will turn into restaurant-quality spaghetti. You may also wind up with more sauce than you intended, but don’t consider this as a waste. Store it in a jar for later use.

That is how to thicken spaghetti sauce with tomato paste!

5. Using Cheese


A fascinating dish of all time – cheese. 

It is also a perfect method to thicken light tomato sauce recipes. A little grated cheese may assist your sauce in adhering to the noodles, creating an appealing aesthetic effect while also increasing the meal’s richness.

6. Using Butter

Pasta Sauce

Butter has the same effect as cheese on warm pasta, although not as intensely. Still, if you want the dish’s texture to be smoother, this is a recipe worth trying!

The secret here is to use one cup of melted butter at first and increase the amount gradually to avoid overdosing.

7. Using Pasta Sauce

When it comes to thickening spaghetti sauce, using pasta sauce as an add-in is probably the last thing on anyone’s mind. This might sound weird, as people normally think that adding water to an already diluted mixture would only worsen it. However, this is not true for spaghetti sauce, as it can work as a thickener!

While the tomato sauce is still boiling, add a little pasta sauce to the saucepan, stir well, and wait until it thickens. We ensure you, the end effect of this method will be really gratifying!

8. Using Breadcrumbs


Breadcrumbs are made from starch and flour, which also have very good water absorption properties. Apparently, breadcrumbs can totally turn out to be a good savior if you are looking for how to thicken spaghetti sauce without paste.

The method is also very simple: Just add breadcrumbs little by little into the spaghetti sauce, and keep increasing until it reaches the ideal consistency.

9. Using Meat And Vegetables

If you still can not find out how to make pasta sauce thicker, then perhaps you should try this solution!

Spaghetti sauce seems to be unique because you can add additional veggies throughout the cooking process without losing the dish’s natural taste.

When your sauce becomes too liquid, put a little more vegetables in and continue to boil. The amount of substance added will assist in balancing the amount of water in the sauce while also adding flavor to the meal.

To guarantee that your meal tastes fantastic at the restaurant, we recommend adding carrots, potatoes, or ground beef.

Tips For Making Spaghetti Sauce

Not only can you use these tips for making spaghetti sauce thicker, but it also can be a solution for the problem of “how to thicken homemade marinara sauce.” Here are some tips for you on making a wonderful spaghetti dressing!

  1. DON’T Put Oil In Your Water Or On Your Pasta

Some people consider that this will loosen the noodles, enabling the sauce to soak in more evenly.

In fact, you should not do that if you do not want your pasta dish to be greasy. Or else, every time you eat it, you will have to use a tissue to wipe your mouth because of its greasiness.

  1. Fill Your Pot Properly

Remember this lesson from pasta class 101: always fill your pot with cold freshwater. Specifically, the amount must be enough to allow the noodles to move freely as the pasta starts to cook and expand. 

The amount of water in the pot will balance the temperature when you put the noodles in, avoiding thermal shock and making the noodles degrade. The thumb rule is to add a minimum of three liters of water for every 250 grams of pasta.

  1. The Size Of The Pasta Changes Everything

Trust us, sizes decide everything! Di Martino once said that the perfect ratio of spaghetti is 1.7mm.

Of course, we do not expect you to hold a ruler to measure each noodle, as this is impossible. Diversity is what makes cuisine such an attractive art as well.

However, you need to understand that the thicker the pasta, the more starch and the more water it absorbs. It would be best to avoid making the noodles too small to avoid the sauce getting soggy.

  1. Four Is The Magic Number

When preparing pasta, the number 4 is a magic number, including cooking spaghetti in 4 minutes and sauce in 4 minutes. Di Martino says. “Since it’s only cooking for four minutes, you’ll get a sauce that’s quite fresh and liquid; it will thicken when you add the spaghetti.” 

Canned Homemade Spaghetti Sauce Recipe

Here is another useful content for you – A lasagna meat sauce recipe easy for your cozy family dinner.


  • Pounds tomatoes (about 80 medium)
  • Green peppers, seeded
  • Onions
  • 24 ounces tomato paste
  • Canola oil
  • Sugar, salt
  • Garlic cloves, oregano, parsley flakes, basil, red pepper flakes
  • Worcestershire sauce
  • Lemon juice


  • The first step is to prepare the ingredients. 
  • Wash the tomatoes with water and cut them into small pieces. 
  • Mince the garlic, chop the onion, and put them in a bowl. 
  • In a big 8-quart saucepan, mix all the ingredients, except the lemon juice, and simmer it over medium heat. You need to stir it continuously for at least 1 hour. 
  • Remove and discard the bay leaf. It would be best to use an immersion mixer to blend it till smooth.
  • Now, fill the bottoms of sterilized, hot quart jars with two teaspoons of lemon juice. 
  • Then pour the prepared spaghetti sauce until the distance between the sauce and the jar’s edge is about 1/2 inch. Be careful not to spill it out! On each jar, place a canning lid and ring.
  • Continue by steaming for 40 minutes. The boiling point of each location of the Earth varies based on altitude above sea level; if you reside in a location with an altitude of 1001-3000ft, steam for about 45 minutes.
  • Finally, use insulated gloves to remove the jars from the autoclave. Examine the box carefully to ensure that it is completely sealed and no air can enter.


How To Thicken Bolognese Sauce?

In this article, we have shown you how to make tomato sauce thicker in many ways. The same goes for bolognese sauce; cornstarch or cheese can work as a thickener for this sauce.

How To Make Spaghetti Sauce Creamy?

Cheese or any dairy products like mascarpone, crème fraîche would be a great idea to add creaminess to the spaghetti sauce. You should only put a little bit of heavy cream or a small cup of grated cheese into the sauce and simmer it under medium heat.

How To Thin Out Spaghetti Sauce?

This is a simple problem to deal with. All you need to do in this situation is add a little bit more water or cream into the mixture, stir it well and simmer for a few minutes.


How to thicken spaghetti sauce in crockpot is not an easy question to answer, as there are so many options that you can go for. Some like adding flour or cornstarch, while others prefer using breadcrumbs as the thickening agent. Others still may opt for pureeing some of the tomato paste with water and then stir it into their saucepan.

The best method will depend on what texture you want your sauce to have and how much time you need before serving dinner!

We hope this article can help you the next time you wonder, “how to thicken pizza sauce,” and how do you thicken tomato sauce! Hope you enjoy your thick spaghetti sauce!

Kevin Richard

Hi all! I’m Kevin. I spend plenty of time in the kitchen every day because I love cooking healthy and delicious foods for my family and friends. Cooking gives me a chance to be creative and fun. It’s also one of the most meaningful ways to express my love and take care of my little family.

Click Here to Leave a Comment Below 1 comments
  • Leave a Reply: