Baked Beef Tenderloin With Diane Sauce is one of those elegant dishes that looks fancy but won’t keep you fussing in the kitchen all day long. I’ve made this for my family countless times, and it never fails to impress everyone at the table.
What makes this recipe so special is that beautiful Diane sauce—it comes together with beef broth, cornstarch, and sautéed onions to create something rich and restaurant-quality right in your own home. The beef itself stays so tender and juicy when you bake it properly, and that sauce just brings everything together perfectly.
This is the kind of dish I serve when I want to show my loved ones how much they mean to me without spending hours in the kitchen. I love seeing their faces light up when they taste that tender beef with that silky sauce—it’s comfort and elegance all on one plate.
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Baked Beef Tenderloin With Diane Sauce
Ingredients
- 1.5 pound Beef
- 1 cup Beef Broth Or Bouillon Canned
- 2 teaspoon Cornstarch
- 1 teaspoon Olive Oil
- 0.25 cup Onions
- 0.25 cup Parsley
- 1 teaspoon Black Pepper
- 2 teaspoon Mustard
- 1 tablespoon Lemon Juice
Instructions
- Heat oven to 400.
- Place sheet of foil on 15 X 10 X 1-inch baking pan or cookie sheet.
- Place beef tenderloin on foil; tuck narrow end under.
- Turn edges of foil up around tenderloin to contain juices.
- Bake at 400 for 30-40 minutes for medium doneness.
- Meanwhile, in small bowl, combine broth and cornstarch; blend well.
- Set aside.
- Heat oil in small nonstick skillet until hot.
- Add onions; cook about 1 minute.
- Stir in parsley, pepper, mustard, and lemon juice.
- Add cornstarch mixture; cook and stir over medium heat for 4 – 6 minutes or until sauce is bubbly and slightly thickened.
- To serve, cut tenderloin into 1/2-inch slices.
- Serve sauce over slices.
