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pile of fettuccine with roasted garlic alfredo sauce
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4.69 from 154 votes

Roasted Garlic Alfredo Sauce

Made with roasted garlic, heavy whipping cream, butter, Parmesan cheese and spices, this creamy sauce is amazing on pasta, as a dip for bread, and more!
Prep Time10 minutes
Cook Time15 minutes
Total Time25 minutes
Course: Main Course
Cuisine: American, Italian
Keyword: cream sauce, homemade alfredo sauce
Servings: 4 servings
Calories: 629kcal

Ingredients

Sauce

  • 1 head roasted garlic *see note #1
  • 6 Tbsp unsalted butter
  • 1 3/4 cup heavy whipping cream
  • 1 1/4 cup Parmesan cheese freshly grated is best
  • 1/2 tsp black pepper, more or less, depending on your tastes

To thicken

  • 1 Tbsp heavy whipping cream
  • 2 tsp cornstarch

Instructions

Prepare

  • Remove cloves of roasted garlic from the head and mash with a fork until smooth and pasty. This can also be done in a food processor if you'd like.

Make sauce

  • In a medium saucepan over MED-LOW heat, add butter and melt.
  • Pour in heavy whipping cream and roasted garlic paste.  Stir and heat to a simmer.
  • Stir in Parmesan cheese and whisk until smooth.

Thicken

  • In a small bowl, combine 1 Tbsp heavy whipping cream and 2 tsp cornstarch (or flour), and whisk until smooth.
  • Add the cornstarch and heavy cream mixture (it will be a thick paste-like consistency), whisking as you add it to remove any lumps and fully incorporate it into the sauce.
  • Continue to whisk and simmer until sauce has thickened to a classic cream sauce consistency.  This may take a few minutes, or it could happen quicker, it all depends on your stovetop and saucepan.

Video

Notes

  1. Here's a handy guide for roasting garlic.
  2. Feel free to substitute an equal amount of all purpose flour in place of the cornstarch.
  3. Recipe makes approximately 2 - 2 1/2 cups of sauce.

Nutrition

Calories: 629kcal | Carbohydrates: 4g | Protein: 14g | Fat: 63g | Saturated Fat: 40g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 16g | Trans Fat: 1g | Cholesterol: 184mg | Sodium: 531mg | Potassium: 139mg | Fiber: 1g | Sugar: 3g | Vitamin A: 2301IU | Vitamin C: 1mg | Calcium: 446mg | Iron: 1mg