Step 1: Cook the Pasta

1. Bring a large pot of salted water to a boil.

2. Add pasta and cook until al dente, according to package directions.

3. Reserve ½ cup of pasta water, then drain and set aside.

Step 2: Brown the Ground Beef

1. Heat olive oil in a large skillet over medium heat.

2. Add ground beef and cook, breaking it up, for 5–6 minutes until browned.

3. Stir in diced onion, garlic, Italian seasoning, salt, pepper, and red pepper flakes.

4. Cook for another 3–4 minutes until onions are soft. Remove from skillet and set aside.

Step 3: Make the Alfredo Sauce

1. In the same skillet, melt butter over medium heat.

2. Whisk in flour and cook for 1 minute to form a roux.

3. Slowly pour in milk and heavy cream, whisking until smooth.

4. Simmer for 3–5 minutes until slightly thickened.

5. Stir in Parmesan, nutmeg (if using), and a pinch of salt and pepper.

6. Cook until cheese melts and sauce becomes smooth and creamy.

Step 4: Combine Everything

1. Add the cooked beef back into the skillet with the Alfredo sauce.

2. Toss in the cooked pasta and mix well until everything is coated.

3. If needed, stir in a splash of reserved pasta water to loosen the sauce.

4. Add baby spinach or any optional veggies and cook 1–2 minutes until heated through.

Step 5: Garnish and Serve

1. Sprinkle with chopped parsley and extra Parmesan cheese.

2. Serve hot with garlic bread or a simple salad on the side.