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Bill Knapp’s Au Gratin Potatoes: A Taste of Nostalgia

The first time I tasted these potatoes, I was probably no taller than the kitchen counter. My family frequented Bill Knapp’s for their reliably comforting food, and for me, the au gratin potatoes were the absolute highlight. The creamy, cheesy sauce clinging to perfectly tender potato chunks – it was pure, simple bliss on a plate. Even now, decades later, a single bite transports me back to those cozy booths, filled with the warmth of family and the anticipation of a delicious meal.

Recipe Overview

Prep Time: 20 minutes
Cook Time: 25-30 minutes
Total Time: 45-50 minutes
Servings: 6
Yield: 1 casserole dish
Dietary Type: Vegetarian

Ingredients

6 cups potatoes, diced, boiled and chilled
½ cup butter
¼ cup flour
2 cups milk
½ teaspoon salt
¼ teaspoon pepper
1 teaspoon paprika
1 teaspoon instant chicken bouillon granules
6 ounces Velveeta cheese, cubed

Equipment Needed

Large saucepan
Whisk
Casserole dish (approximately 9×13 inch)

Instructions

Begin by preparing the potatoes. Wash, peel (if desired), and dice them into roughly half-inch cubes. The goal is to have bite-sized pieces that cook evenly.
Place the diced potatoes in a pot, cover with water, and bring to a boil. Cook until they are fork-tender, but not mushy. Overcooked potatoes will disintegrate in the sauce. Once cooked, drain the potatoes thoroughly and allow them to cool completely. Chilling them helps prevent them from falling apart later.
While the potatoes are chilling, prepare the cheese sauce. In a large saucepan over medium heat, melt the ½ cup of butter. Be careful not to burn the butter.
Once the butter is melted, add the ¼ cup of flour to the saucepan. Whisk constantly to create a smooth roux. This step is crucial for a lump-free sauce. Cook the roux for about 1-2 minutes, stirring continuously, to cook out the raw flour taste.
Gradually pour in the 2 cups of milk, whisking constantly to prevent lumps from forming. Continue to cook the sauce over medium heat, stirring frequently, until it begins to thicken. This may take several minutes.
Once the sauce has thickened to a consistency similar to heavy cream, add the remaining ingredients: ½ teaspoon salt, ¼ teaspoon pepper, 1 teaspoon paprika, 1 teaspoon instant chicken bouillon granules, and 6 ounces of cubed Velveeta cheese.
Stir continuously until the cheese is completely melted and the sauce is smooth and creamy. Ensure that all the dry ingredients (salt, pepper, paprika, and bouillon) are fully incorporated into the sauce.
Gently fold the chilled potatoes into the cheese sauce, ensuring that they are evenly coated. Be careful not to overmix, as this can cause the potatoes to break down.
Pour the potato mixture into a casserole dish. Spread the mixture evenly in the dish.
Bake uncovered in a preheated oven at 350°F (175°C) for 25-30 minutes, or until the top is lightly browned and the sauce is bubbly. Keep a close eye on the potatoes during the last few minutes of baking to prevent the top from burning.
Remove from the oven and let stand for a few minutes before serving. This allows the sauce to thicken slightly.

Expert Tips & Tricks

For an even richer flavor, consider using half-and-half or heavy cream instead of milk in the sauce.
If you want a crisper topping, sprinkle soft bread crumbs (panko works well) over the potatoes before baking.
To make ahead, assemble the casserole and refrigerate it for up to 24 hours before baking. Add an extra 10-15 minutes to the baking time if baking from cold.
If the sauce becomes too thick, add a little more milk to thin it out. If it’s too thin, continue cooking it over low heat until it reaches the desired consistency.
For a more complex flavor profile, add a pinch of nutmeg to the sauce.

Serving & Storage Suggestions

Serve these au gratin potatoes hot as a side dish with roasted chicken, baked ham, or grilled steak. They also pair well with a simple green salad.

Leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days. Reheat gently in the oven or microwave until warmed through. To reheat in the oven, cover the dish with foil to prevent the top from drying out. You can also freeze them for up to 2 months. Thaw completely in the refrigerator before reheating. Note that the texture of the sauce may change slightly after freezing and thawing.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	409.9 kcal	N/A
Calories from Fat	222 g	54%
Total Fat	24.8 g	38%
Saturated Fat	15.7 g	78%
Cholesterol	74.6 mg	24%
Sodium	989.8 mg	41%
Total Carbohydrate	37.2 g	12%
Dietary Fiber	3.6 g	14%
Sugars	3.5 g	N/A
Protein	11.1 g	22%

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

Variations & Substitutions

For a richer flavor, use Gruyere or sharp cheddar cheese in addition to or in place of the Velveeta.
Add sliced onions or garlic to the butter while melting for a more savory flavor.
For a spicier version, add a pinch of cayenne pepper or a dash of hot sauce to the sauce.
To make this dish gluten-free, use a gluten-free all-purpose flour blend in place of the regular flour.
You can substitute the milk with a plant-based alternative such as almond or soy milk, but be aware that this may slightly alter the flavor and texture of the sauce.

FAQs (Frequently Asked Questions)

Q: Can I use unchilled potatoes for this recipe?
A: While you can, chilling the potatoes helps them hold their shape better during baking and prevents them from becoming mushy.

Q: Is Velveeta cheese essential to this recipe?
A: While it contributes to the signature flavor, you can substitute it with another melting cheese like cheddar or Gruyere, though the flavor will be slightly different.

Q: Can I add meat to this dish?
A: Absolutely! Cooked ham, bacon, or sausage would be delicious additions. Simply fold them into the potato mixture before baking.

Q: How can I prevent the sauce from being lumpy?
A: The key is to whisk the flour and butter together thoroughly to create a smooth roux, and then gradually add the milk, whisking constantly to prevent lumps from forming.

Q: Can I freeze the au gratin potatoes?
A: Yes, you can freeze the casserole before or after baking. However, the texture of the sauce may change slightly after thawing. To minimize texture changes, thaw completely in the refrigerator before reheating.

Final Thoughts

These au gratin potatoes are more than just a side dish; they’re a warm, comforting hug on a plate. Whether you’re seeking a taste of nostalgia or simply a delicious and easy-to-make side, this recipe is sure to please. Don’t be afraid to experiment with variations and substitutions to make it your own. I encourage you to try this recipe and share your feedback! Serve it alongside your favorite main course and enjoy the simple pleasure of good food shared with loved ones.

Bill Knapp’s Au Gratin Potatoes Recipe