Heat olive oil in a large skillet over medium-high heat.
2 teaspoons olive oil
Add beef, season with salt and pepper and cook until browned, stirring frequently, about 3 minutes.
1 pound top sirloin, ½ teaspoon salt, ½ teaspoon pepper
Add mushrooms and cook for another 3 minutes. Add Dijon mustard and garlic and cook for 1 minute, stirring constantly. Add white wine vinegar and cook for 2 minutes.
10 ounces mushrooms, 1 tablespoons Dijon mustard, 1 teaspoon garlic, ¼ cup white wine vinegar
Add beef broth and noodles, return to a boil, reduce heat to medium to medium low and simmer for 18 - 20 minutes, stirring occasionally, or until noodles are tender and the liquid is reduced
2 cans beef broth, 8 ounces wide egg noodles
Reduce heat to low, add sour cream and cook until heated through.
½ cup sour cream
Notes
You can use white wine instead of white wine vinegar if you have it.
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Nutritional information is approximate.
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