French Beef Au Gratin

Prep: 15 min Cook: 25 min Serves: 4 Cuisine: French

A rich French-inspired beef au gratin featuring tender beef cubes, caramelized onions, and melted cheese served over fettuccine, perfect for comforting, elegant dinners.

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Ingredients

  • 1/2 cup margarine
  • 4 cups thinly sliced Vidalia or white onions
  • 1 pound beef tenderloin, cut in 1/2-inch cubes
  • 3 tablespoons flour
  • 1 tablespoon brown sugar
  • 1 teaspoon cumin
  • 1 teaspoon salt
  • 1/2 teaspoon pepper
  • 1 quart beef broth
  • 2 cups cooked fettuccine

Instructions

  1. Melt margarine in a pan and saute onions for 15 to 20 minutes until caramelized.
  2. Remove onions from the pan and brown the beef tenderloin cubes well.
  3. Return the onions and any juices to the pan with the beef.
  4. In a small bowl, mix flour, brown sugar, cumin, salt, and pepper. Add to the pan and stir for 1 minute until bubbly.
  5. Gradually add beef broth, stirring to scrape up drippings from the pan.
  6. Simmer the mixture for 10 minutes.
  7. Preheat the broiler.
  8. Divide 1/2 cup of cooked fettuccine into each of four 16-ounce bowls.
  9. Divide the beef mixture over the pasta in each bowl.
  10. In a bowl, mix cheeses together and sprinkle evenly over the beef.
  11. Broil about 5 minutes until the cheese is melted and lightly browned.

Tips & Substitutions

For best results, use high-quality beef tenderloin for tenderness and flavor. If you don't have Vidalia onions, any sweet onion will work. You can substitute the fettuccine with another pasta type, like penne or spaghetti, if desired. If you prefer a vegetarian version, swap the beef with mushrooms and use vegetable broth.

Serving Suggestions

Serve this French Beef Au Gratin with a fresh green salad or roasted vegetables for a complete meal. It pairs beautifully with crusty bread to soak up the flavorful broth. For a heartier meal, consider serving it alongside garlic mashed potatoes or a side of creamy mushroom bake for an indulgent touch.

Storage & Reheating

Store leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, place in the oven at 350°F (175°C) until warmed through, about 15-20 minutes. You can also microwave in short intervals, stirring occasionally, until heated evenly.

Nutrition & Diet Analysis (per serving)

Each serving of French Beef Au Gratin contains roughly 2672 calories, with 68g protein, 27g carbohydrates, and 259g fat. It is an excellent source of iron (157% of the Daily Value), protein (136% of the Daily Value), and vitamin C (107% of the Daily Value). Note that it is relatively high in sodium, at 3000mg per serving (130% of the Daily Value).

2672 kcal 100% DV
Protein Fat Carbs

Macronutrients

Protein 68.1g 100% DV
Total Fat 259.4g 100% DV
Carbs 26.6g 10% DV
Fiber 7.1g 25% DV
Sugar 6.8g 14% DV

Electrolytes

Sodium 3000mg 100% DV
Potassium 1697.2mg 36% DV
Cholesterol 211.3mg 70% DV

Vitamins & Minerals

Vitamin A 65.3mcg 7% DV
Vitamin C 96.1mg 100% DV
Vitamin D 0.1mcg
Calcium 411.8mg 32% DV
Iron 28.3mg 100% DV
Diet fit High-protein High-fiber
Contains Wheat/Gluten

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I make this dish ahead of time?

Yes, you can prepare the beef mixture and store it in the refrigerator for up to 2 days. When ready to serve, simply reheat and assemble with the fettuccine and cheese before broiling.

What type of cheese should I use?

A blend of cheeses works best. Consider using Gruyère for its melting quality and sharpness, along with mozzarella for stretchiness. You can also include Parmesan for added flavor.

Can I use a different cut of beef?

While tenderloin is ideal for its tenderness, you can substitute it with sirloin or flank steak. Just be sure to slice it thinly and adjust the cooking time to ensure it's cooked to your liking.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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