Guide to Basic White Sauces: Béchamel & Alfredo

Learn how to make a classic béchamel (white sauce) and transform it into variations like alfredo and cheese sauce. A foundational skill for pasta, soup, and creamy dishes.


What Is a Béchamel Sauce?

Béchamel, often called a basic white sauce, is one of the five French “mother sauces.” It starts with a roux (flour + butter) and is then thinned with milk or cream. It’s the creamy, blank canvas that can turn into a rich cheese sauce, a smooth alfredo from scratch, or a comforting white sauce for pasta.

If you’re new to roux or wondering how to make white sauce from scratch, check out our Guide to Making a Roux for step-by-step details on this essential thickening base.


Ingredients for Classic Béchamel

  • 2 tablespoons butter
  • 2 tablespoons all-purpose flour
  • 2 cups milk (whole milk recommended)
  • Salt and freshly ground black pepper to taste
  • Optional: a pinch of nutmeg for added depth

Instructions

  1. In a saucepan over medium heat, melt the butter.
  2. Add the flour and whisk continuously to form a smooth roux. Cook for 1–2 minutes to eliminate the raw flour taste.
  3. Slowly add the milk, starting with just a few tablespoons at a time. Whisk thoroughly after each addition to create a smooth blend and avoid lumps.
  4. Once about half the milk is incorporated and the mixture is smooth, gradually add the remaining milk, continuing to whisk.
  5. Bring to a gentle simmer, stirring constantly until the sauce thickens (about 5–8 minutes).
  6. Season with salt, pepper, and optionally a pinch of nutmeg.

Texture Tip

A perfect béchamel should coat the back of a spoon without feeling gritty or overly thick.


What Can You Make from Béchamel?

Béchamel is endlessly versatile:

  • Cheese Sauce: Add shredded cheddar or gruyère for macaroni and cheese.
  • Alfredo Sauce: Add parmesan and optionally cream, sour cream, or cream cheese.
  • Cream Soups: Add stock, cooked chicken, or vegetables to create creamy soup bases.
  • Lasagna or Casserole Base: Use as a thick, creamy layer in baked pasta dishes.
  • Mornay Sauce: A béchamel with added cheese, often gruyère or parmesan.
  • Soubise Sauce: Béchamel mixed with cooked pureed onions.
  • Mustard Sauce: Add dijon mustard for pairing with pork or vegetables.

Alfredo Sauce: A Béchamel Variant

While many alfredo recipes skip the flour base, a roux-based alfredo offers better consistency and reheats more smoothly.

Ingredients:

  • 2 tablespoons butter
  • 2 tablespoons flour
  • 1.5 cups milk or cream
  • ½ cup grated parmesan cheese
  • Optional: 1 tablespoon cream cheese or sour cream for richness

Instructions:

  1. Follow the same steps as béchamel.
  2. Once thickened, stir in parmesan and any optional ingredients.
  3. Whisk until smooth and melted.
  4. Serve over pasta, vegetables, or meat.

Common Mistakes to Avoid

  • Adding all the milk at once: This causes lumps. Gradual pouring while whisking is key.
  • Undercooking the roux: Leaves a raw flour taste.
  • Overthickening: Use a 1:1 ratio of flour and butter per cup of milk for the best consistency.

Recipes That Use White Sauce

These recipes all start with a béchamel or a variation of white sauce:

  • Macaroni and Cheese
  • Alfredo Chicken Pasta
  • Creamy Baked Lasagna
  • Cream of Chicken Soup
  • Broccoli Cheese Casserole

(Links will be updated as recipes go live!)


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