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The Ultimate Guide to Homemade White Sauce for Pasta

I remember the first time I made white sauce. I was a nervous teenager trying to impress my family with my burgeoning culinary skills. The sauce was lumpy, tasted mostly of flour, and clung to the pasta in a most unappetizing way. But I persisted, driven by the desire to create that creamy, comforting sauce that I had enjoyed in restaurants. Years later, I’ve perfected the art, and this recipe is the result of countless trials and errors – a silky, flavorful white sauce that will elevate any pasta dish. This recipe, passed down and tweaked over years, is my go-to for everything from lasagna to a simple weeknight dinner.

Recipe Overview

Prep Time: 5 minutes
Cook Time: 10 minutes
Total Time: 15 minutes
Servings: Approximately 5 1/2 cups
Yield: 5 1/2 cups
Dietary Type: Vegetarian

Ingredients

1/2 cup butter
1/4 cup margarine
2 tablespoons flour
2 cups milk
1 1/2 cups cream or half-and-half
1 (15 ounce) can chicken broth
3 tablespoons cornstarch
1 teaspoon salt
1/2 teaspoon rosemary, crushed
1 dash nutmeg
1/2 teaspoon garlic powder
1 1/2 cups grated parmesan cheese

Equipment Needed

Saucepan
Whisk

Instructions

In a medium saucepan, melt the butter and margarine over medium heat. Be careful not to brown the butter. This step is crucial for building flavor; the melted butter provides a rich base for the sauce.
Add the flour to the melted butter and margarine. Stir constantly with a whisk until a smooth paste forms. This is called a roux. Cook the roux for about 1-2 minutes, stirring constantly, to cook out the raw flour taste. This step is critical, as it ensures the sauce won’t have a grainy or starchy flavor.
Gradually add the milk and cream (or half-and-half) to the roux, whisking continuously to prevent lumps from forming. Adding the liquids slowly and whisking vigorously is key to a smooth sauce. Make sure all the flour is incorporated before adding more liquid.
In a separate small bowl, whisk together the chicken broth and cornstarch until the cornstarch is completely dissolved. This slurry will act as a thickener. Make sure there are no lumps of cornstarch before adding it to the saucepan.
Pour the chicken broth and cornstarch mixture into the saucepan with the milk mixture. Continue to stir constantly.
Heat the mixture to boiling, stirring constantly. Ensure you scrape the bottom of the pan to prevent sticking and burning. The sauce will thicken as it heats up.
Once the sauce reaches a boil, continue to boil for one minute, stirring constantly. This step ensures the cornstarch is fully activated and the sauce reaches its desired thickness.
Remove the saucepan from the heat. This is important to prevent the cheese from curdling.
Add the salt, crushed rosemary, nutmeg, and garlic powder to the sauce. Stir well to combine. These spices add depth and complexity to the sauce. Adjust the seasoning to your preference.
Stir in the grated parmesan cheese until it is melted and smooth. The cheese will add richness and a nutty flavor. Stir until the cheese is fully incorporated and the sauce is smooth and creamy.

Expert Tips & Tricks

Preventing Lumps: The key to a smooth white sauce is constant whisking, especially when adding the milk and cream to the roux. If lumps do form, you can use an immersion blender to smooth them out.
Flavor Infusion: For a more intense flavor, try infusing the milk with garlic cloves or herbs before adding it to the roux. Simply heat the milk with the aromatics, let it steep for 30 minutes, then remove the solids before using the milk in the recipe.
Adjusting Thickness: If your sauce is too thick, add a little more milk or chicken broth to thin it out. If it’s too thin, whisk together a teaspoon of cornstarch with a tablespoon of cold water and stir it into the sauce. Bring the sauce back to a simmer until it thickens.
Cheese Incorporation: Add the parmesan cheese off the heat to prevent it from clumping or becoming stringy. Stir until it’s fully melted and incorporated into the sauce.
Make-Ahead Tip: The white sauce can be made ahead of time and stored in the refrigerator for up to 3 days. Reheat gently over low heat, stirring frequently, before using. You may need to add a little milk or broth to thin it out.

Serving & Storage Suggestions

This versatile white sauce is perfect for coating pasta, layering in lasagna, or serving over steamed vegetables. For a simple pasta dish, toss the sauce with your favorite cooked pasta and add some grilled chicken or shrimp for a complete meal. Garnish with fresh parsley or basil for a pop of color.

Leftover white sauce can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, gently warm the sauce in a saucepan over low heat, stirring frequently. You may need to add a splash of milk or broth to thin it out. The sauce can also be frozen for up to 2 months. Thaw it in the refrigerator overnight before reheating. Keep in mind that the texture may change slightly after freezing.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	627.8 kcal	N/A
Calories from Fat	510 g	81%
Total Fat	56.7 g	87%
Saturated Fat	31.8 g	159%
Cholesterol	153.1 mg	51%
Sodium	1404.7 mg	58%
Total Carbohydrate	14 g	4%
Dietary Fiber	0.1 g	0%
Sugars	0.6 g	2%
Protein	17.1 g	34%

Note: Nutritional information is an estimate and may vary based on specific ingredients and preparation methods.

Variations & Substitutions

Dairy-Free: Substitute the butter with a plant-based butter alternative, the milk and cream with oat milk or cashew cream, and the parmesan cheese with a vegan parmesan alternative.
Gluten-Free: Ensure you are using a gluten-free flour blend for the roux. A 1:1 gluten-free all-purpose flour blend works well.
Spicy: Add a pinch of red pepper flakes or a dash of hot sauce to the sauce for a spicy kick.
Herbaceous: Experiment with different herbs, such as thyme, oregano, or basil, in place of the rosemary.
Cheesy: Use a blend of different cheeses, such as Gruyere, Fontina, or mozzarella, in addition to the parmesan.

FAQs (Frequently Asked Questions)

Q: How do I prevent my white sauce from being too thick?
A: To prevent your white sauce from being too thick, ensure you’re using the correct ratio of flour to liquid. Also, stir constantly while cooking to prevent the sauce from thickening unevenly. If it does become too thick, add a little more milk or broth to thin it out.

Q: Can I use a different type of milk for this recipe?
A: Yes, you can use different types of milk, such as whole milk, 2% milk, or even non-dairy milk alternatives like oat milk or almond milk. Keep in mind that the flavor and texture of the sauce may vary depending on the type of milk you use.

Q: What is a roux, and why is it important?
A: A roux is a mixture of fat (in this case, butter and margarine) and flour that is cooked together and used as a thickening agent for sauces and soups. Cooking the roux for a minute or two before adding the liquid helps to cook out the raw flour taste and prevents the sauce from being grainy.

Q: Can I make this white sauce ahead of time?
A: Yes, you can make this white sauce ahead of time and store it in the refrigerator for up to 3 days. Reheat it gently over low heat, stirring frequently, before using. You may need to add a little milk or broth to thin it out.

Q: What can I use this white sauce for besides pasta?
A: This versatile white sauce can be used for a variety of dishes, including lasagna, gratins, casseroles, and creamed vegetables. It can also be used as a base for cream soups or as a topping for baked potatoes.

Final Thoughts

Making white sauce from scratch might seem intimidating, but with this recipe and a little practice, you’ll be creating creamy, delicious sauces in no time. Don’t be afraid to experiment with different flavors and variations to make it your own. I encourage you to try this recipe and share your feedback. Pair this delightful sauce with a crisp, dry white wine like Pinot Grigio, and enjoy!

White Sauce for Pasta Recipe