Creamy Steak and Baby Broccoli Alfredo Spaghetti (High-Protein Dinner)

When you’re craving a cozy, satisfying pasta night that still feels nourishing, Creamy Steak and Baby Broccoli Alfredo Spaghetti checks every box. Juicy, perfectly seared steak adds hearty protein, while tender spaghetti and vibrant baby broccoli are coated in a rich, silky Alfredo sauce that tastes like it came straight from a restaurant kitchen. This is the kind of dinner that brings everyone to the table fast, ideal for busy weeknights but impressive enough for a special family meal or casual entertaining.

Why You’ll Love This Recipe

• High in protein thanks to tender sirloin steak and Parmesan-rich Alfredo sauce.
• One-pot and skillet method keeps cleanup quick and easy.
• Creamy, comforting flavors balanced with fresh baby broccoli.
• Family-friendly and customizable with simple add-ins or spice.

Ingredients

• Spaghetti (12 oz): A classic pasta that holds the creamy Alfredo sauce beautifully.
• Sirloin steak (1 lb, cubed): Lean, flavorful, and packed with protein.
• Baby broccoli / broccolini (2 cups): Adds color, texture, and freshness.
• Olive oil (2 tbsp): Used to sear the steak for a golden crust.
• Butter (3 tbsp): Forms the rich base of the Alfredo sauce.
• Garlic (3 cloves, minced): Adds depth and aroma to the sauce.
• Heavy cream (1 cup): Creates that signature creamy Alfredo texture.
• Whole milk (½ cup): Lightens the sauce slightly while keeping it smooth.
• Freshly grated Parmesan (1¼ cups): Brings salty, nutty richness to the dish.
• Salt, black pepper, garlic powder, smoked paprika: Essential seasonings for bold, savory flavor.
• Optional garnishes: Red pepper flakes, fresh parsley, cracked black pepper for extra finish.

How to Make Creamy Steak and Baby Broccoli Alfredo Spaghetti

Cook the Pasta and Broccoli

Bring a large pot of well-salted water to a boil. Cook the spaghetti until al dente, adding the baby broccoli during the last 3 minutes so it stays tender-crisp. Drain and reserve ½ cup of the pasta water for later.

Sear the Steak

Season the steak cubes generously with salt, black pepper, garlic powder, and smoked paprika. Heat olive oil in a large skillet over medium-high heat and sear the steak for 3–5 minutes until browned on the outside. Avoid overcrowding the pan to get a proper sear. Remove the steak and set aside.

Make the Alfredo Sauce

In the same skillet, melt the butter and add the minced garlic. Sauté for about 30 seconds until fragrant, being careful not to burn it. Pour in the heavy cream and milk, then simmer gently for 3–4 minutes. Stir in the Parmesan cheese gradually until the sauce becomes smooth and creamy.

Combine Everything

Return the steak, cooked pasta, and baby broccoli to the skillet. Toss gently until everything is evenly coated in the Alfredo sauce. If the sauce is too thick, add a splash of the reserved pasta water until you reach your desired consistency.

Finish and Serve

Taste and adjust seasoning as needed. Top with cracked black pepper, red pepper flakes, or fresh parsley, and serve hot for the best creamy texture.

Tips for Success

Use freshly grated Parmesan instead of pre-shredded cheese for the smoothest sauce. Let the steak rest briefly after searing so it stays juicy when added back to the pasta. Keep the sauce at a gentle simmer to prevent separation. Reserve pasta water every time, as it’s the easiest way to fix sauce consistency.

Equipment Needed

• Large pot for boiling pasta
• Large skillet or sauté pan
• Tongs or pasta spoon
• Measuring cups

Recipe Variations

• Extra Veggie Alfredo: Add mushrooms or spinach for more texture and nutrition.
• Spicy Steak Alfredo: Increase smoked paprika and add extra red pepper flakes.
• Lighter Version: Swap half of the heavy cream for more milk and reduce butter slightly.
• Flavor Boost: Finish with lemon zest or a drizzle of truffle oil.

Serving Suggestions

Serve this creamy steak Alfredo spaghetti with a crisp green salad, garlic bread, or roasted vegetables. A simple side balances the richness of the sauce and completes the meal.

FAQs

Can I use a different cut of steak? Yes, ribeye or New York strip work well, but sirloin keeps the dish lean and high in protein.
Can I make this ahead of time? It’s best fresh, but leftovers can be stored in the refrigerator for up to 3 days.
How do I reheat Alfredo pasta? Reheat gently over low heat with a splash of milk or cream to restore creaminess.
Can I use frozen broccoli? Fresh baby broccoli is recommended, but frozen can work if thawed and well-drained.
Is this recipe kid-friendly? Absolutely. Skip the red pepper flakes for a milder version.

Final Thoughts

Creamy Steak and Baby Broccoli Alfredo Spaghetti is the ultimate high-protein comfort dinner that feels indulgent yet balanced. With juicy steak, tender pasta, and a luxuriously creamy sauce, it’s a homemade meal that satisfies every time. Try it for your next dinner and enjoy how effortlessly it brings everyone together around the table.

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