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prep time
10 min
cook time
5 min
ready time
15 min
Keto Mornay Sauce
Keto Mornay sauce, or cheese sauce, is a mixture of arrowroot starch, whole milk, butter, and shredded gruyere cheese. It is a rich and flavorful sauce that can be used as a base for other sauces and is created from one of the five mother sauces: bechamel. Our version is wonderfully Low Carb and Keto! Mornay sauce can be used in other Keto dishes like Keto lasagna, a creamy cauliflower dish, or as a base for a creamy cheese sauce. Mornay sauce would make the best cauliflower mac and cheese! Since there is cheese in the sauce, you can brown the mac and cheese under the broiler for a beautiful finish. If you are looking for one of the best Keto sauces, this is one of the most versatile ones around!
How do you make Keto Mornay sauce?
Our Keto Mornay sauce is made by melting plenty of butter in a small saucepan. Once the butter is melted, the arrowroot starch is added and blended with a whisk. The mixture will bubble, but continue to mix it well with a whisk. Next, whole milk is added. Continue to whisk until everything has thickened. Then, add the shredded cheese and whisk until it is melted. You can adjust by adding slightly more milk if needed. Taste and adjust, adding sea salt as necessary.
How do you know the sauce is at the right consistency? The sauce is at the right consistency when the sauce coats the back of a spoon. Then, run a finger through the sauce-coated spoon, and if the sauce doesn't run back together very quickly, then it is the right consistency.
How can you store finished Mornay sauce?
Typically Mornay sauce is used immediately after making. However, if you have any leftover sauce, it can be stored in an airtight container until you are ready to use it. Reheat the sauce in a pan gently before use.
Can I use other cheeses?
Yes! Feel free to use any easy-to-melt cheese, but gruyere is the standard cheese for Mornay sauce.
Use this Keto Mornay sauce layered in with the shredded cheese in our Best Keto Kosher Lasagna!
Net Carbs
4.7 g
Fiber
0.1 g
Total Carbs
4.8 g
Protein
4.3 g
Fats
8.4 g
112 cals
#1 Low Carb & Keto Diet App Since 2010
Track macros, calories, and access top Keto recipes.
Ingredients
Butter
2 tbsp
Arrowroot flour
2 tbsp
Whole milk
1.25 cup
Coarse Kosher Salt
0.25 tsp
Gruyere cheese
0.5 cup, grated
Recipe Steps
steps 5
15 min
Step 1
Add the butter to a small saucepan. Place the pan over low heat. Cook until the butter is all melted. Stir with a whisk to help the process along.Step 2
Next, add the arrowroot starch. Whisk well to incorporate. Keep whisking over low heat until the mixture starts to bubble.Step 3
Immediately pour in the whole milk. Whisk constantly until the mixture thickens. Once it thickens, (it will thicken all at once) season with ¼ tsp kosher salt.Step 4
Add in the finely diced or shredded cheese. Whisk until it fully melts and incorporates into the sauce. Feel free to use any easy-to-melt cheese in this sauce to add your own flair.Step 5
Feel free to add black pepper if you would like. Use immediately. Store in an airtight container if using at a later time.
