Classic Bechamel Sauce
Why You’ll Love This Recipe
I first learned about Béchamel from constantly hearing chefs use it on cooking shows. Once I tried it, I realized why it’s a staple: it’s a simple white sauce that brings a smooth, creamy texture to dishes like lasagna, mac and cheese, and vegetable gratins.
Making Béchamel at home takes only about 10 minutes from start to finish. Once you use it in your favorite comfort foods, you will never bother with store-bought packaged sauces again!
The Secret to Lighter, Creamier Lasagna
I started using Béchamel in my lasagna and found that it allowed me to build more layers. It also makes every bite feel noticeably lighter and creamier compared to traditional recipes.
Ricotta cheese often makes lasagna feel dense and heavy, leaving little room for delicious side dishes. Swapping in a silky Béchamel solves that problem completely, making your pasta dishes much easier to serve and enjoy.
About the Recipe
Béchamel is a classic French white sauce and one of the five mother sauces in classic French cooking. It is simply milk thickened with a butter and flour roux, plus a pinch of nutmeg to give the sauce a warm flavor and marry the ingredients.
This versatile white sauce is typically used as a base for making other rich sauces. Most commonly, adding cheese turns it into a Mornay sauce for mac and cheese, while on its own, it serves as an essential staple for homemade lasagna and potato gratin.
About the Ingredients
- Whole Milk: Whole milk provides essential fat content, giving the sauce a rich body and an exceptionally smooth, thick texture.
- Unsalted Butter: Melting unsalted butter adds rich flavor and supplies the necessary cooking fat to build our roux.
- All-Purpose Flour: Whisked into the melted butter, flour forms the roux that thickens the milk into a silky, velvety sauce.
- Ground Nutmeg: Just a single pinch brings a subtle, warm aroma that marries all the rich flavors without making the sauce taste like nutmeg.
Instructions
1. Warm the Milk
Measure out your milk and let it sit on the counter for 15 minutes to come to room temperature. This prevents the cold milk from seizing when added to the warm butter mixture.
2. Melt the Butter
Melt the unsalted butter in a saucepan over medium-low heat. Keep an eye on it so the butter melts smoothly without browning.
3. Build the Roux
Add the all-purpose flour to the melted butter. Whisk continuously until a smooth, creamy roux forms with absolutely no lumpiness.
4. Whisk in the Milk
Slowly pour in the milk while whisking constantly to combine it smoothly with the roux. Sprinkle in a pinch of ground nutmeg and keep whisking.
5. Simmer and Thicken
Reduce the heat to low and bring the sauce to a gentle simmer. Stir continuously until the sauce thickens enough to coat the back of a spoon.
6. Remove and Protect
Take the saucepan off the heat so the delicate white sauce does not burn on the bottom. Press plastic wrap directly onto the surface of the sauce so it does not form a skin while cooling.
Chef’s Note on Seasoning
Hold off on adding salt and pepper to your Béchamel if the final dish already features salty ingredients. You can always season the main recipe to taste later without making the sauce overly salty.
Adjusting Sauce Thickness
Depending on your recipe, you will want a different consistency for your Béchamel. Use a medium thickness for layering lasagna, or a thicker sauce for holding up in mac and cheese.
To change the thickness, simply adjust the ratio of butter and flour while keeping the milk amount constant:
| Sauce Thickness | Whole Milk | Unsalted Butter | All-Purpose Flour |
| Thin Sauce | 2 cups | 2 tbsp | 2 tbsp |
| Medium Sauce | 2 cups | 4 tbsp | 4 tbsp |
| Thick Sauce | 2 cups | 6 tbsp | 6 tbsp |
Frequently Asked Questions
- What if I burn the sauce? Start over and redo the sauce. It comes together in just a few minutes, and unfortunately, there is no saving a scorched white sauce.
- Can I use 2% or skim milk? Yes, but the sauce will be less rich and will take longer to thicken. Add an extra tablespoon of both butter and flour to your roux to help low-fat milk thicken faster without burning.
- Can I make Béchamel ahead of time? Absolutely. Cover the sauce with plastic wrap pressed onto the surface and store it in the refrigerator. Let it come to room temperature, then gently rewarm it in a saucepan while whisking briskly.
- Firehouse Tip: How do I clean a burnt pot bottom? Don’t throw the pot away! Simply cover the bottom with water, bring it to a boil on the stove, and scrape the burnt bits right off as it boils.
Classic Béchamel Sauce
Ingredients
- 2 cups whole milk, room temperature
- 4 tbsp unsalted butter
- 4 tbsp all-purpose flour
- 1 pinch nutmeg
Instructions
- Add the milk to a measuring cup and allow it to come to room temperature or you can warm it in a separate saucepan. Do not allow it to boil.
- Melt the butter in a saucepan over medium-low heat and then whisk in the flour and whisk until the butter and flour form a smooth roux. The roux should be pale in color.
- Gradually whisk in the milk until the roux and milk are smooth.
- Add the nutmeg and cook, whisking often, until the sauce thickens enough to coat the back of a spoon about 5-8 minutes. The sauce should pour from the spoon smoothly, not in clumps.
- Use the sauce immediately. If you need to wait, cover the sauce with plastic wrap to avoid the sauce forming a skin. If this does happen, rewarm the sauce and whisk it briskly, then use.
