La meilleure sauce béchamel
La meilleure sauce béchamel is a easy French recipe that serves 4. 450 calories per serving. Recipe by 750g on YouTube.
Prep: 15 min | Cook: 25 min | Total: 50 min
Cost: $7.99 total, $2.00 per serving
Ingredients
- 45 g Unsalted Butter (divided: 25 g for roux, 20 g for spreading on bread)
- 25 g All-Purpose Flour (for white roux)
- 500 ml Whole Milk (room temperature for easier incorporation)
- 0.25 tsp Ground Nutmeg (freshly grated if possible)
- 0.5 tsp Salt (adjust to taste)
- 0.25 tsp Black Pepper (freshly ground)
- 1 tbsp Dijon Mustard (adds acidity and depth)
- 200 g Gruyère Cheese (grated; can substitute with Emmental or sharp cheddar)
- 100 g Cooked Ham (thinly sliced)
- 8 slices Country Bread (thick sliced, sturdy enough for baking)
Instructions
Measure and Prepare Ingredients
Gather all ingredients, measure butter, flour, milk, spices, mustard, cheese, ham, and bread. Grate the cheese and slice the ham if not pre‑sliced.
Time: PT5M
Make a White Roux
Melt 25 g butter in a saucepan over medium‑low heat. Add the flour, whisk continuously for about 2 minutes until the mixture is smooth and bubbles but does not turn golden.
Time: PT3M
Incorporate Milk Gradually
Add the milk a little at a time, whisking constantly to prevent lumps. Continue until all 500 ml milk is fully incorporated and the mixture is smooth.
Time: PT5M
Thicken the Sauce
Raise the heat slightly and bring the mixture to a gentle simmer, whisking constantly. Cook until the sauce coats the back of a spoon and thickens, about 5 minutes.
Time: PT5M
Season the Béchamel
Stir in the salt, pepper, and freshly grated nutmeg. Taste and adjust seasoning as needed.
Time: PT1M
Add Mustard
Whisk in 1 tbsp Dijon mustard, giving the sauce a subtle tang.
Time: PT1M
Incorporate Cheese – Mornay Sauce
Add the grated Gruyère cheese, stirring until fully melted and the sauce becomes glossy and elastic.
Time: PT3M
Assemble Croque Sandwiches
Spread a thin layer of butter on one side of each bread slice. On the unbuttered side, place a slice of ham, then a generous spoonful of the Mornay sauce, and top with another slice of bread, buttered side up.
Time: PT5M
Preheat Oven
Preheat the oven to 200°C (390°F).
Time: PT5M
Temperature: 200°C
Bake Croques
Place the assembled sandwiches on a baking sheet and bake for 10 minutes, until the tops are golden and the sauce is bubbling.
Time: PT10M
Temperature: 200°C
Serve
Remove from oven, let rest 1 minute, then cut each sandwich diagonally and serve hot.
Time: PT1M
Nutrition Facts
- Calories
- 450
- Protein
- 20 g
- Carbohydrates
- 35 g
- Fat
- 25 g
- Fiber
- 2 g
Dietary info: Contains meat, Contains dairy, Contains gluten
Allergens: Dairy, Gluten, Mustard, Pork
Ingredient Substitutions
- Instead of Unsalted Butter: Margarine
- Instead of All-Purpose Flour: Gluten‑free flour blend
- Instead of Whole Milk: Unsweetened soy milk, Oat milk
- Instead of Ground Nutmeg: Mace
- Instead of Dijon Mustard: Whole grain mustard
- Instead of Gruyère Cheese: Emmental, Sharp cheddar
- Instead of Cooked Ham: Turkey ham, Smoked tofu for vegetarian version
- Instead of Country Bread: Sourdough, Whole‑grain bread
Equipment Needed
- Saucepan
- Whisk
- Measuring Cups and Spoons
- Kitchen Scale (optional)
- Grater
- Baking Sheet
- Oven
- Spatula
- Knife
Critical Steps — Do Not Skip
- Creating a white roux without browning the butter.
- Gradually adding milk while whisking to avoid lumps.
- Cooking the sauce to the correct thickness before adding cheese.
- Fully melting the cheese to achieve a smooth Mornay sauce.
- Baking the assembled croques until the exterior is golden and the interior sauce is bubbling.
Chef Tips from the Video
- For extra depth, toast the flour in the roux for 30 seconds before adding milk.
- A pinch of cayenne pepper adds a subtle heat that pairs well with the ham.
Troubleshooting
Sauce has lumps after adding milk.
Return the pan to low heat and whisk vigorously; if lumps persist, blend with an immersion blender.
Sauce is too thin after cooking.
Simmer a few minutes longer, whisking constantly, or add a teaspoon of flour mixed with cold water.
Cheese becomes grainy.
Remove the pan from heat before adding cheese, then stir gently until smooth.
Storage
Refrigerator: Store the sauce in an airtight container for up to 3 days; reheat gently over low heat.
Freezer: Freeze the sauce in a sealed container for up to 1 month; thaw overnight and reheat, adding a splash of milk if needed.
Room temperature: Do not store at room temperature; the sauce contains dairy.
Make-Ahead Tips
- The Mornay sauce can be prepared up to 2 days ahead; keep covered and reheat gently.
- Assemble the croques without baking, cover, and refrigerate; bake just before serving.
Frequently Asked Questions
What is the cultural significance and history of Croque Monsieur in French cuisine?
Croque Monsieur originated in early 20th‑century Parisian cafés as a quick, indulgent snack. It became a staple of French bistro culture, symbolizing comfort food with its buttery bread, ham, and rich cheese sauce.
What are the traditional regional variations of Croque Monsieur in French cuisine?
In the south of France, a fried egg is added on top, turning it into a Croque Madame. Some regions use Gruyère or Emmental, while others prefer Comté or a blend of cheeses for a deeper flavor.
How is a classic Mornay sauce traditionally served in France?
Mornay sauce, a cheese‑enriched béchamel, is traditionally poured over vegetables like cauliflower, used in gratins, or layered in dishes such as Croque Monsieur and lobster thermidor.
What occasions or celebrations is Croque Monsieur traditionally associated with in French culture?
Croque Monsieur is a popular brunch and café snack, often enjoyed during leisurely weekend breakfasts or as a light lunch in French cafés.
What other French dishes pair well with a Mornay sauce?
Mornay sauce complements classic French dishes such as cauliflower gratin, baked macaroni, and seafood like lobster thermidor, adding a creamy, cheesy richness.
What makes Mornay sauce special or unique in French cuisine?
Mornay sauce is essentially a béchamel enriched with cheese and sometimes mustard, giving it a velvety texture and a subtle tang that elevates simple dishes into elegant fare.
What are the most common mistakes to avoid when making Mornay sauce for Croque Monsieur?
Common errors include over‑browning the roux, adding milk too quickly which creates lumps, and overheating the sauce after cheese is added, which can cause grainy texture.
Why does this recipe use a white roux instead of a brown roux for the béchamel?
A white roux keeps the sauce neutral in flavor, allowing the cheese, mustard, and nutmeg to shine. A brown roux would impart a nutty taste that can overpower the delicate balance needed for Croque Monsieur.
Can I make the Mornay sauce ahead of time and how should I store it before using in Croque Monsieur?
Yes, the sauce can be prepared up to two days ahead. Store it in an airtight container in the refrigerator and gently reheat over low heat, adding a splash of milk if it thickens too much.
What does the YouTube channel 750g specialize in?
The YouTube channel 750g specializes in clear, step‑by‑step cooking tutorials that focus on fundamental techniques, classic recipes, and practical kitchen tips for home cooks.
How does the YouTube channel 750g's approach to French cooking differ from other French cooking channels?
750g emphasizes simplicity and precision, breaking down classic French sauces like béchamel into easy‑to‑follow steps, whereas many other channels focus on elaborate presentations or advanced techniques.
Last updated: August 21, 2026
