This Cheesy Potato Casserole is made with fresh potatoes and a creamy, tangy homemade cheese sauce. Perfect for a cozy family dinner that doesn’t require much prep. Serve it by itself or round it out with you favorite meat or plant-based protein for a full meal.

10 mins
40 mins


  • Large pot
  • 9" x 9" baking dish
  • Medium skillet


  • 1.5 lbs Little Potatoes, cubed
  • 1/4 cup Unsalted butter
  • 1/2 medium medium onion, finely chopped
  • 1 tsp garlic, minced
  • 1 tsp Italian seasoning
  • 1/2 tsp salt
  • 1/4 tsp black pepper
  • 2 Tbsp all-purpose flour
  • 1 1/2 cups milk
  • 1/2 cup sour cream
  • 3 cups cheddar cheese, shredded and divided


  • Step 1

    Bring a large pot of salted water to a boil. Add potatoes and cook 5 to 6 minutes, until almost tender.

  • Step 2

    Drain potatoes and place in a lightly greased 9” × 9" baking dish. Preheat the oven to 375 °F.

  • Step 3

    In a medium skillet, melt butter over medium heat and cook onion until softened and beginning to brown.

  • Step 4

    Stir in garlic, Italian seasoning, salt and pepper and cook for one minute.

  • Step 5

    Add flour and whisk until combined.

  • Step 6

    Add milk and cook over medium heat, stirring frequently, until thickened—about five minutes.

  • Step 7

    Stir in sour cream and two cups of cheddar cheese.

  • Step 8

    Pour sauce over potatoes in baking dish, stirring to combine. Sprinkle with remaining one cup cheese and bake until bubbly and golden, about 20 minutes.

  • Step 9

    Remove from the oven and allow to sit for 5 to 10 minutes before serving.