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Printable recipe card for creamy mushroom ground beef casserole surrounded by ingredients
Grant Logan

Creamy Mushroom Ground Beef Casserole: The Easiest Comfort Food Dinner

This creamy mushroom ground beef casserole is the ultimate easy comfort food dinner. Rich, flavorful, and ready with simple ingredients, it's the kind of weeknight meal that tastes like a hug in a dish.
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Prep Time 15 minutes
Cook Time 50 minutes
Total Time 1 hour 5 minutes
Servings: 6 servings
Course: Casserole
Cuisine: American
Calories: 420
Ingredients Method Notes

Ingredients
  

  • 1 lb 450g ground beef (85/15 preferred)
  • 1 small onion diced
  • 2 cloves garlic minced
  • 8 oz 225g cremini or baby bella mushrooms, sliced
  • 1 can 10.5 oz cream of mushroom soup
  • 1/2 cup sour cream
  • 1/4 cup milk
  • 1 tsp Worcestershire sauce
  • Salt and pepper to taste
  • 1/2 tsp dried thyme
  • 1 1/2 cups shredded cheddar or mozzarella cheese
  • Butter or oil for cooking

Method
 

  1. Preheat oven to 350°F (175°C). Grease a 9×13-inch casserole dish.
  2. In a skillet, brown the ground beef with diced onion and garlic. Drain excess grease.
  3. Add sliced mushrooms to the skillet and sauté until golden and moisture is evaporated.
  4. In a large bowl, mix cream of mushroom soup, sour cream, milk, Worcestershire, thyme, salt, and pepper.
  5. Stir in the cooked beef and mushrooms until well combined.
  6. Spread mixture into prepared casserole dish and top with shredded cheese.
  7. Cover with foil and bake for 35–40 minutes.
  8. Uncover and bake an additional 10–15 minutes until cheese is golden and bubbly.
  9. Let rest for 10 minutes before serving.

Notes

Try topping with crispy fried onions or breadcrumbs before baking for added crunch. For a heartier version, mix in cooked egg noodles or rice before baking.