Steak Alfredo Spaghetti with Creamy Parmesan and Roasted Red Peppers Recipe

If you’re craving a dish that feels like a cozy steakhouse dinner wrapped in the comfort of creamy pasta, this Steak Alfredo Spaghetti with Creamy Parmesan and Roasted Red Peppers is exactly what you need. Perfect for a relaxing weekend meal, a romantic date night at home, or any time you want to treat yourself without spending hours in the kitchen, this recipe delivers indulgence in every bite.

Inspired by the bold flavors of classic Italian Alfredo with a hearty steakhouse twist, this dish combines tender, juicy steak bites, perfectly cooked spaghetti, and the sweetness of roasted red peppers. Every forkful offers a luxurious balance of creamy Parmesan sauce, garlicky aroma, and rich, savory satisfaction — all ready in just 30 minutes. It’s comfort food elevated, easy enough for weeknights but impressive enough for guests.

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Why You’ll Love This Steak Alfredo Spaghetti

There’s something undeniably comforting about creamy pasta — and when you add tender steak and roasted red peppers, it becomes unforgettable. Here’s why this dish deserves a place on your dinner rotation:

• Quick and easy: Ready in just 30 minutes from start to finish.

• Rich and flavorful: A homemade Alfredo sauce with real Parmesan cheese for authentic flavor.

• Steakhouse-inspired: Juicy, seared steak adds depth and heartiness.

• Perfect balance: Creamy, cheesy, and slightly sweet from the roasted red peppers.

• Versatile: Works beautifully with sirloin, ribeye, or even leftover grilled steak.

This recipe transforms everyday ingredients into something restaurant-worthy — no fancy tools or complicated steps needed.

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Ingredients

To make this creamy, savory pasta, gather these simple ingredients:

• 12 oz spaghetti

• 1 lb sirloin or ribeye steak, cut into bite-size pieces

• Salt and black pepper, to taste

• 1 tsp garlic powder

• 2 tbsp olive oil

• 4 tbsp unsalted butter

• 3 cloves garlic, minced

• 1 cup roasted red peppers, sliced

• 1 cup heavy cream

• ½ cup grated Parmesan cheese

• ½ tsp Italian seasoning

• ½ tsp red pepper flakes (optional, for a touch of heat)

• 1 tbsp chopped parsley, for garnish

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Directions

1. Cook the Spaghetti

Fill a large pot with salted water and bring it to a boil. Add the spaghetti and cook according to the package directions until al dente. Before draining, reserve about ½ cup of the pasta water, as it will help loosen and enrich the sauce later. Drain the pasta and set it aside.

2. Sear the Steak Bites

Pat the steak pieces dry with paper towels to help them sear properly. Season generously with salt, black pepper, and garlic powder.

Heat olive oil in a large skillet over medium-high heat. Once hot, add the steak in a single layer (you may need to do this in batches to avoid overcrowding). Sear each side for 1–2 minutes, until browned and cooked to your liking.

Remove the steak bites from the skillet and set them aside on a plate. They’ll release some juices — save that for extra flavor later.

3. Make the Creamy Alfredo Sauce

In the same skillet, reduce the heat to medium and melt butter in the leftover pan drippings. Add the minced garlic and sauté for about 30 seconds until fragrant — be careful not to let it burn.

Pour in the heavy cream and stir well, scraping up any browned bits from the bottom of the pan. Bring the mixture to a gentle simmer, then whisk in Parmesan cheese, Italian seasoning, and red pepper flakes if you’re using them.

Let the sauce cook for 2–3 minutes, stirring often, until it thickens slightly and becomes silky smooth.

4. Add Roasted Red Peppers & Combine Everything

Stir in the roasted red peppers and let them warm through in the sauce for a minute. Add the cooked spaghetti and seared steak bites to the skillet, tossing gently to coat everything evenly in the creamy Parmesan sauce.

If the sauce seems too thick, add a splash of the reserved pasta water to reach your desired consistency. The starch from the pasta water helps the sauce cling perfectly to every strand of spaghetti.

5. Finish & Serve

Once everything is coated in that luscious sauce, taste and adjust the seasoning with more salt or pepper if needed. Sprinkle with chopped parsley and a little extra Parmesan cheese before serving.

Serve hot and enjoy this comforting, restaurant-quality meal right from your own kitchen.

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Prep Time: 10 minutes

Cook Time: 20 minutes

Total Time: 30 minutes

Yield: 4 servings

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Tips for Perfect Steak Alfredo Spaghetti

Creating the perfect creamy steak pasta is all about balance and technique. Here are some expert tips to ensure your dish turns out amazing every time:

1. Choose the right cut of steak: Sirloin and ribeye are ideal because they’re tender and flavorful. Avoid leaner cuts like flank steak unless marinated first.

2. Sear, don’t steam: Make sure the pan is hot before adding steak to get that golden-brown crust and lock in the juices.

3. Don’t overcook the pasta: Al dente pasta holds up better when tossed in sauce and doesn’t turn mushy.

4. Use fresh Parmesan: Pre-grated cheese doesn’t melt as smoothly and can make the sauce grainy. Grate it fresh for the creamiest texture.

5. Save that pasta water: It’s your secret weapon for adjusting the consistency and helping the sauce cling perfectly to the spaghetti.

6. Let it rest briefly: Allow the finished pasta to sit for 1–2 minutes before serving — this helps the sauce thicken slightly and the flavors meld beautifully.

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How to Roast Red Peppers (If You Want to Make Them Fresh)

While jarred roasted red peppers are convenient and delicious, making your own adds a smoky depth of flavor.

Here’s how:

1. Preheat your oven to 450°F (230°C).

2. Place whole red bell peppers on a baking sheet lined with foil.

3. Roast for 20–25 minutes, turning occasionally, until the skins are charred and blistered.

4. Transfer the peppers to a bowl and cover with plastic wrap for 10 minutes to steam.

5. Peel off the skins, remove the seeds, and slice them into strips.

Homemade roasted peppers bring extra freshness and a slightly smoky aroma that elevates the entire dish.

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What to Serve with Steak Alfredo Spaghetti

This dish is hearty enough to stand on its own, but pairing it with the right sides makes for a complete, restaurant-quality meal.

• Garlic Bread or Breadsticks: Perfect for soaking up the creamy sauce.

• Simple Green Salad: A crisp salad with a light vinaigrette balances the richness of the pasta.

• Roasted Vegetables: Broccoli, asparagus, or zucchini make excellent, colorful additions.

• Caesar Salad: A classic pairing that adds crunch and tang.

You can also top the pasta with a sprinkle of extra Parmesan and a crack of fresh black pepper for an irresistible finish.

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Storing & Reheating Leftovers

This pasta reheats surprisingly well — here’s how to keep it creamy and delicious:

• Refrigerate: Store leftovers in an airtight container for up to 3 days.

• Reheat: Warm in a skillet over low heat with a splash of milk or cream to bring back the sauce’s creaminess.

• Avoid microwaving too long: Short intervals with frequent stirring work best to prevent the sauce from separating.

Freezing is not recommended since the cream sauce may change texture, but fresh leftovers will still taste indulgent the next day.

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Recipe Variations

One of the best parts of this recipe is its flexibility. You can easily adapt it to fit your taste or what you have on hand:

• Add spinach or kale: Stir in a handful of greens for color and extra nutrients.

• Try a different pasta: Fettuccine, linguine, or penne all work beautifully with this sauce.

• Use chicken instead of steak: If you prefer poultry, swap in seared chicken breast or thighs for a lighter option.

• Add mushrooms: Sautéed mushrooms add earthy flavor that pairs wonderfully with the creamy sauce.

• Make it spicy: Increase the red pepper flakes or add a pinch of cayenne for a little extra kick.

Each variation keeps the same comforting essence while offering a new twist on flavor.

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Nutritional Information (Approximate per serving)

• Calories: 680

• Protein: 38g

• Carbohydrates: 52g

• Fat: 35g

• Fiber: 3g

• Sugar: 4g

• Sodium: 640mg

These values may vary slightly depending on the specific ingredients used, but they provide a good general idea for planning purposes.

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Frequently Asked Questions

1. Can I use another type of steak for this recipe?

Absolutely! You can use New York strip, top sirloin, or even filet mignon if you’re feeling fancy. Just be sure not to overcook the meat so it stays tender and juicy.

2. How do I keep my Alfredo sauce smooth and creamy?

The key is to use fresh Parmesan cheese and avoid overheating the sauce. Simmer gently and whisk continuously until it thickens naturally. Adding the cheese slowly also prevents clumping.

3. What if my sauce is too thick?

Add a splash of the reserved pasta water or a bit of milk. Stir it in gradually until the sauce reaches your ideal consistency.

4. Can I make this dish ahead of time?

It’s best enjoyed fresh, but you can prepare the components ahead — cook the steak and pasta separately, then toss them with the sauce just before serving for the best texture.

Final Thoughts

This Steak Alfredo Spaghetti with Creamy Parmesan and Roasted Red Peppers isn’t just another pasta dish — it’s a restaurant-quality comfort meal made easy for the home cook. Every element works in harmony: tender steak for richness, roasted red peppers for color and sweetness, and a velvety Parmesan sauce that ties it all together.

Whether you’re cooking for family, friends, or just treating yourself to something special, this dish transforms a regular evening into something memorable. It’s proof that indulgence doesn’t have to be complicated — sometimes, all you need is a skillet, a handful of good ingredients, and a craving for something truly satisfying.

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