Scalloped Potatoes and Ham Casserole

This Scalloped Potatoes and Ham recipe is sure to please the whole family. This classic casserole combines tender potatoes with smoky ham in a homemade buttery cream sauce. It’s a comforting meal that can be served for any occasion.

Baked scalloped potatoes and ham casserole.

Making scalloped potatoes and ham casserole recipe is easy to make and is a great way to use up leftover ham or that stash of potatoes that you got from Sam’s or Costco.


For this potato casserole, you need the following ingredients:

  • 4 tablespoons butter
  • ¼ cup all-purpose flour
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • 3 cups whole milk
  • 6 cups potatoes thinly sliced
  • 1 cup ham diced
  • 1 cup frozen peas
  • 2 tablespoons dehydrated minced onions

How To Make Scalloped Potatoes and Ham

You begin by preheating your oven. While the oven is preheating, I like to dice my ham and prepare my potatoes.

Potatoes soaking in water.

If you don’t have good knife skills like me, using a mandolin will help you get even slices every time. You just have to be really careful not to cut yourself.

Soaking the sliced potatoes in water will help remove some of the starch and to keep them from browning.

Frozen peas and ham.

Once you have all of your ingredients ready (mis en place), start the roux. There are a few steps in making a roux – first, you have to melt butter. Once it has melted, add flour and seasonings and then stir. Once it has a paste-like consistency, slowly whisk in milk.

Using a flat or gravy whisk helps to keep the roux from sticking to the bottom of the pan. It’s important to stir this often to prevent it from burning and sticking to the pan.

Once the milk mixture starts to thicken and boil, remove it from the heat source and stir in the dehydrated onions. It’s now time to layer the casserole.

Drain the potatoes and layer half of the potatoes in a casserole dish or 9×13 baking pan that has been lightly sprayed with non-stick spray. Add half of the peas and ham.

Layer of ham, peas, and potatoes.

Carefully ladle half of the creamy butter sauce on top.

Spooning roux over potatoes, ham, and peas.

Repeat with the remaining ingredients. Try to make sure that all of the potatoes are covered with sauce.

Top layer of scalloped potatoes and ham.

Cover the casserole dish either with a lid or aluminum foil and bake for 65 minutes. Remove the covering and bake for an additional 15 minutes.

Scoop of scalloped potatoes and ham.

Scalloped potatoes and ham pairs well with a side salad and some crusty French bread.

Other comfort food recipes you may enjoy:

baked scalloped potatoes and ham casserole

Scalloped Potatoes and Ham

This comforting dish is a great way to use leftover ham and potatoes.
5 from 1 vote
Print Pin Rate
Course: Main Dishes
Cuisine: American
Prep Time: 35 minutes
Cook Time: 1 hour 20 minutes
Total Time: 1 hour 55 minutes
Servings: 4 people
Calories: 585kcal


  • 4 tablespoons butter
  • ¼ cup all-purpose flour
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • 3 cups whole milk
  • 6 cups potatoes thinly sliced
  • 1 cup ham diced
  • 1 cup frozen peas
  • 2 tablespoons dehydrated minced onions


  • Preheat oven to 375 degrees.
  • Melt butter over medium heat in a large saucepan. Add flour, salt, and pepper and mix. Slowly whisk in milk and increase heat to medium-high.
  • Cook milk mixture until it begins to thicken and starts to boil. Remove it from the heat.
  • Layer potatoes, ham, and frozen peas in the bottom of a casserole dish or 9×13 pan. Ladle half of milk mixture on top. Repeat layers.
  • Cover casserole and bake for 65 minutes. Remove cover and bake for an additional 15 minutes.
  • Remove casserole from oven and allow to cool for 10 minutes before serving.


Serving: 1 | Calories: 585kcal | Carbohydrates: 73g | Protein: 22g | Fat: 23g | Saturated Fat: 13g | Trans Fat: 1g | Cholesterol: 70mg | Sodium: 1190mg | Potassium: 1661mg | Fiber: 6g | Sugar: 14g | Vitamin A: 919IU | Vitamin C: 33mg | Calcium: 261mg | Iron: 4mg
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Steps for making scalloped potatoes and ham.

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