Left Over Steak with Caremelized Onion and Cheese Sauce

Transform your leftovers into a gourmet experience with this irresistible recipe for Leftover Steak with Caramelized Onion and Cheese Sauce. Tender slices of leftover steak are paired with sweet, golden caramelized onions and smothered in a rich, velvety cheese sauce made with a blend of sharp cheddar and Parmesan. The caramelized onions, cooked low and slow with a hint of sugar, bring out natural sweetness that perfectly complements the savory steak and creamy sauce. With simple pantry staples like butter, milk, and flour, this dish comes together in just 40 minutes, making it an effortless yet indulgent way to repurpose your steak. Garnish with a sprinkle of fresh parsley for a touch of color and freshness, and serve it as a decadent main course or an elevated comfort food treat. Perfect for busy weeknights or casual entertaining, this recipe is your go-to for maximizing flavor while minimizing waste! Keywords: leftover steak recipe, caramelized onion, cheese sauce, easy dinner idea, repurposed leftovers.

Nutriscore Rating: 61/100

Prep Time:10 mins

Cook Time:30 mins

Total Time:40 mins

Servings: 4

Ingredients

• 2 cups leftover steak
• 3 tablespoons butter
• 2 medium yellow onion
• 1 teaspoon sugar
• 0.5 teaspoon salt
• 1 tablespoon all-purpose flour
• 1.5 cups milk
• 1 cup shredded cheddar cheese
• 0.25 cup Parmesan cheese
• 0.5 teaspoon black pepper
• 1 tablespoon olive oil
• 2 tablespoons fresh parsley (optional, for garnish)

Directions

Step 1

Slice the leftover steak into thin strips or bite-sized pieces and set aside.

Step 2

Peel and thinly slice the onions into half-moons.

Step 3

In a large skillet, melt 2 tablespoons of butter over medium heat and add the olive oil to prevent the butter from burning.

Step 4

Add the sliced onions to the skillet and sprinkle them with sugar and a pinch of salt. Stir well to coat.

Step 5

Cook the onions on medium-low heat for 15-20 minutes, stirring occasionally, until they are golden brown and caramelized. Remove from the skillet and set aside.

Step 6

In the same skillet, melt the remaining 1 tablespoon of butter over medium heat. Add the flour and whisk continuously for 1 minute to form a roux.

Step 7

Slowly add the milk to the roux, whisking constantly to prevent lumps, and cook for 2-3 minutes until the mixture thickens slightly.

Step 8

Reduce the heat to low and add the shredded cheddar and Parmesan cheeses to the sauce. Stir until the cheese is fully melted and the sauce is smooth. Season with black pepper and add more salt to taste, if needed.

Step 9

Return the caramelized onions to the skillet with the cheese sauce and stir to combine.

Step 10

In a separate skillet on medium heat, warm the leftover steak slices for 1-2 minutes until just heated through, being careful not to overcook them.

Step 11

Serve the warmed steak topped with the caramelized onion and cheese sauce. Garnish with fresh parsley, if desired. Enjoy!

Nutrition Facts

Serving size	(1269.3g)

Amount per serving	% Daily Value*
Calories	2489.1

Total Fat 172.3g	0%
Saturated Fat 82.4g	0%
Polyunsaturated Fat 2.6g
Cholesterol 663.8mg	0%
Sodium 2744.9mg	0%
Total Carbohydrate 54.1g	0%
Dietary Fiber 4.3g	0%
Total Sugars 31.7g
Protein 174.4g	0%

Vitamin D 167.8IU	0%
Calcium 1579.1mg	0%
Iron 12.9mg	0%
Potassium 2430.4mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 62.9%

Protein: 28.3%

Carbs: 8.8%