Creamy Garlic Butter Spaghetti

garlic butter spaghetti in a white bowl garnished with parsley and red pepper flakes.

5 from 3 votes

This quick and easy Creamy Garlic Butter Spaghetti is super garlicky good and takes just 20 minutes to make! With lots of fresh garlic, heavy cream, parmesan cheese, and perfectly cooked pasta, this is a recipe your whole family will love!

Prep Time5

Cook Time15

Total Time20

Course: Dinner, Lunch

Cuisine: American, Italian

Servings:

Calories: 890kcal

Author: Joanna Cismaru

Ingredients

8 ounces spaghetti
1 tablespoon olive oil
½ cup butter unsalted
1 medium onion chopped
4 cloves garlic minced
salt and pepper to taste
2 teaspoons Italian seasoning
½ cup white wine such as Sauvignon blanc
1½ cups heavy cream
1 cup Parmesan cheese grated
½ teaspoon red pepper flakes

US Customary - Metric

Instructions

Cook the spaghetti according to package instructions. Reserve ½ cup of pasta water and drain.
In a large skillet add the olive oil and butter and melt over medium heat. Add the onion and cook for 3 to 5 minutes until onion is softened. Add the garlic and cook for another 30 seconds until aromatic.
Season with salt, pepper and Italian seasoning.
Stir in the white wine and simmer for about 3 minutes. Add the heavy cream and bring to a boil. Add the reserved ½ cup of pasta water and stir. Simmer for another 5 minutes until the sauce thickens. Remove from heat.
Stir in the parmesan cheese into the sauce. Add the cooked pasta and toss it well.
Garnish with additional Parmesan cheese and red pepper flakes.

Notes

Salt the water well. Add about a tablespoon of salt to your pasta cooking water. It should taste salty like the sea. This helps to infuse the noodles with flavor as they cook.
Reserve cooking water. Make sure to reserve some of the pasta cooking water. The starch in the pasta water helps to thicken the sauce and seasons the dish too.
Use fresh quality ingredients. Using freshly minced garlic cloves, high-quality butter, and a decent parmesan cheese is going to result in a lot more flavor.
Leftover creamy garlic butter spaghetti will keep in the fridge for up to 5 days in an airtight container. To reheat, just add a few tablespoons of water or milk to the noodles to loosen them up a bit, and then put them in the microwave on medium powder for a few minutes. You can also reheat the pasta in a saucepan on the stove over medium-low heat if you prefer.

Nutrition