Spinach mushroom casserole

Spinach mushroom casserole

  • Prep:
  • Cook Time: 20 min
  • Total: 20 min
  • Serving: 4-6 People

Here's a delicious recipe for a spinach mushroom casserole that your family will love.


  • 1 package whole white button mushrooms, rinsed with stems separated and reserved
  • 2 packages frozen, chopped spinach, defrosted
  • 2 cups shredded cheddar cheese
  • Dried onion
  • Garlic powder
  • 1 stick butter, quartered


  1. Melt 1/4 stick butter in skillet over medium-high heat.
  2. Add mushroom caps, smooth side down, and stems; sauté until golden brown, about 2 minutes; drain liquid.
  3. Melt 1/4 stick of butter in microwave, for approximately 20 seconds; mix into spinach.
  4. Spray non-stick cooking spray into 9 x 13-inch casserole dish.
  5. Add spinach mixture; lightly sprinkle with dried onion throughout; layer with 1 cup cheese.
  6. Add mushrooms, lightly sprinkle with garlic powder; layer with 1 cup cheese.
  7. Sprinkle with extra garlic powder and dried onion (optional).
  8. Bake at 325 degrees F until cheese is lightly browned and bubbly, approximately 20 minutes.
  9. Cover with aluminum foil and refrigerate. May be made one day ahead.