Spinach Potato Casserole


Preparation info

  • Servings:


    ( 2½ quart or 9 × 13 inch casserole dish)
    • Difficulty


    • Ready in

      1 hr

Appears in

Love Your Leftovers

Love Your Leftovers

By Nick Evans

Published 2014

  • About

This is a very different flavor profile from the baked potato dip recipe, although it has a similar mashed potato base. It’s almost a meal in a dish frankly. You have your veggies, carbs, and protein all stacked together, which always makes for a good casserole in my opinion. One hint: Don’t skimp on the spinach. Use full adult spinach and use a lot of it. It cooks down substantially and can get lost in the dish if you don’t use enough.


  • 5 cups baked potatoes (about 3 or 4 medium-size potatoes)
  • cup heavy cream
  • 4 tablespoons unsalted butter
  • Salt and pepper
  • ½ teaspoon red pepper flakes
  • 8 ounces (5-6 packed cups) spinach
  • Olive oil
  • 2 cups (about 4 ounces) grated mozzarella or Cheddar cheese
  • 8 ounces Italian sausage (spicy is best)
  • 1 medium white onion, sliced
  • 1 clove garlic, minced
  • 1 teaspoon fresh rosemary


    1. Preheat oven to 350°F.
    2. Peel baked potatoes and cut them into ½-inch cubes. Microwave on high for 3 minutes to heat them up.
    3. Mash potatoes with cream and butter. Season with a pinch of salt and pepper and red pepper flakes.
    4. Rinse spinach well (don’t worry about drying it) and roughly chop. In a large skillet, add about a tablespoon of olive oil over medium heat. Once hot, add the spinach and season with a pinch of salt. Cook until spinach is wilted, just a few minutes. Stir wilted spinach and any liquid into the mashed potatoes along with the grated cheese.
    5. Add another drizzle of oil into the skillet and add sausage removed from casing. Turn heat up to medium-high and let sausage brown nicely for 6 to 7 minutes. Add sliced onions and let them cook down.
    6. When sausage is browned and onions are starting to brown, add minced garlic along with rosemary and kill the heat.
    7. Butter or oil a large -quart or 13 × 9-inch casserole dish. Spread in mashed potato mixture and top with the sausage and onion mixture.
    8. Bake the casserole until the potatoes are browned around the edges and the cheese is bubbling, about 20 minutes. Let cool briefly before serving.