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Velvety soft and tender layers of two kinds of potatoes, smothered in a rich 3 cheese garlic sauce, then topped with extra cheese for a perfectly crispy top! It's the scalloped potato dish you've been dreaming of your entire life! #scallopedpotatoes #potato #sidedish #holiday #Easter #cheese #potatoesaugratin #augratin #makeahead
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4.64 from 109 votes

Cheesy Scalloped Potatoes

Ultra creamy and rich, these cheesy scalloped potatoes are full of great classic flavors!
Prep Time20 minutes
Cook Time1 hour 30 minutes
Total Time1 hour 50 minutes
Course: Side Dish
Cuisine: American
Keyword: au gratin, easter, make ahead side dish
Servings: 8 servings
Calories: 310kcal

Ingredients

  • 1 1/4 lbs red potatoes, washed, but not peeled
  • 1 1/4 lbs Yukon gold potatoes, washed, but not peeled
  • 1 onion, sliced thinly
  • 3 Tbsp butter
  • 3 Tbsp all purpose flour
  • 2 cloves garlic, minced
  • 1 tsp dry mustard
  • 1/4 tsp dried thyme
  • 1/4 tsp paprika
  • salt and pepper, to taste
  • 2 cups whole milk
  • 1 cup cheddar cheese shredded
  • 1/2 cup gruyere cheese shredded
  • 1/4 cup Parmesan cheese grated
  • fresh chives, for garnish
  • fresh parsley, for garnish
  • additional 1/4 cup cheddar cheese, shredded
  • additional 1/4 cup gruyere cheese, shredded
  • additional 2 Tbsp Parmesan cheese, grated

Instructions

  • Preheat oven to 400 degrees F.  Butter a 2 quart casserole dish and set aside.  
  • Slice potatoes in 1/8" thin slices (I use this mandoline slicer), and set aside.  
  • Add butter to medium saucepan, and heat over MED heat.  When butter is melted, add garlic and saute for 1 minute, until fragrant.  Add flour, whisk, and cook 1 minute.  Slowly add milk, whisking continuously, until no lumps remain.  Whisk over MED heat until mixture is thick and coats the back of a spoon.
  • Turn off heat, add cheeses, dry mustard, thyme, paprika, salt and pepper, and stir until smooth.
  • Layer half the potatoes and onion slices in prepared casserole dish, pour approximately half of the cheese sauce over potatoes and let sit for a minute.  Repeat with remaining potatoes, onions, and cheese sauce.
  • Sprinkle top of potatoes with gruyere, cheddar and Parmesan.  Spray aluminum foil with cooking spray, then cover the casserole dish (sprayed side down).  Place casserole on a baking sheet and bake for 60 minutes.
  • Remove foil and bake uncovered an additional 25-30 minutes.  Potatoes should be tender and cheese melted.  Broil on HIGH for a minute or two for extra browning and crispiness.
  • Sprinkle top with chives and parsley and serve.

Video

Notes

For make-ahead, freezing, and crockpot instructions, scroll back up to the body of the post.  There are headings with all the information.

Nutrition

Calories: 310kcal | Carbohydrates: 27g | Protein: 16g | Fat: 15g | Saturated Fat: 9g | Cholesterol: 46mg | Sodium: 336mg | Potassium: 745mg | Fiber: 3g | Sugar: 4g | Vitamin A: 540IU | Vitamin C: 15.4mg | Calcium: 384mg | Iron: 3.2mg