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Easy Creamy Cheesy Potato Bake

Easy creamy cheesy potato bake in a white casserole dish, topped with golden melted cheese and garnished with thyme.

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This Easy Creamy Cheesy Potato Bake is a rich and comforting side dish made with cubed potatoes baked in a creamy sauce with two types of cheese. Perfect for holidays, potlucks, or any time you want to wow the crowd with a simple, delicious recipe.

  • Author: Emily
  • Prep Time: 15 minutes
  • Cook Time: 85 minutes
  • Total Time: 1 hour 40 minutes
  • Yield: 10 servings
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

  • 1.25 kg / 2.5 lb potatoes (Russet or Yukon Gold)
  • 2/3 cup (160 ml) milk (full or low fat)
  • 3/4 cup (185 ml) thickened cream (heavy cream)
  • 1/3 cup mayonnaise, preferably whole egg (or substitute with 1/4 cup cream)
  • 1 1/2 tsp fresh thyme leaves (or 1 tsp dried), plus more for garnish
  • 2 large garlic cloves, minced
  • 3/4 tsp salt
  • Black pepper, to taste
  • 2 cups (200 g) shredded cheese (Gruyère, cheddar, Monterey Jack, etc.)
  • 1 cup (100 g) shredded mozzarella cheese

Instructions

  1. Preheat oven to 350°F (180°C).
  2. Peel and cut potatoes into 2/3-inch cubes and place in a large bowl.
  3. Add milk, cream, mayonnaise, thyme, garlic, salt, pepper, and shredded cheese (excluding mozzarella) to the bowl. Mix well to coat the potatoes evenly.
  4. Pour the mixture into a 3-quart (3-liter) baking dish and cover tightly with foil.
  5. Bake for 60 minutes or until the potatoes are tender when pierced with a fork.
  6. Remove foil, sprinkle mozzarella cheese evenly on top, and return to the oven uncovered for 25 minutes, or until the top is golden and bubbly.
  7. Let the bake rest for 5–10 minutes before serving. Garnish with extra thyme leaves if desired.

Notes

  • Use starchy potatoes like Russet or Yukon Gold for best texture.
  • Mayo adds extra flavor and creaminess—skip or replace with more cream if preferred.
  • Cheese varieties that melt well (Gruyère, cheddar, Monterey Jack) work best.
  • Don’t worry if the sauce looks split after the first bake—it smooths out after resting.
  • Great for make-ahead: assemble, chill, and bake when ready to serve.
  • Can be frozen before final cheese topping and baked later.