Hearty Potato, Beef, and Mushroom Casserole

When it comes to wholesome, satisfying meals, casseroles always deliver. This Hearty Potato, Beef, and Mushroom Casserole is a one-dish wonder that layers tender potatoes, savory ground beef, earthy mushrooms, and creamy sauce, all baked to golden perfection. It’s rustic, nourishing, and perfect for weeknights, family gatherings, or cozy weekends when you want something warm and filling.

Why You’ll Love This Casserole

• Comfort food classic: Layers of beef, potatoes, and mushrooms baked in a creamy sauce.
• Family-friendly: Generous portions and kid-approved flavors.
• One-dish meal: Meat, potatoes, and veggies together for easy serving.
• Make-ahead option: Assemble in advance, then bake when ready.

Ingredients

• 1 ½ pounds ground beef (or thinly sliced beef for a different texture)
• 2 tablespoons olive oil or butter
• 1 large onion, diced
• 3 garlic cloves, minced
• 2 cups mushrooms, sliced (button, cremini, or mixed)
• 2 tablespoons all-purpose flour
• 1 cup beef broth
• 1 cup milk or heavy cream
• 1 teaspoon Worcestershire sauce
• 1 teaspoon thyme (fresh or dried)
• Salt and pepper, to taste
• 4–5 medium potatoes, peeled and thinly sliced
• 2 cups shredded cheese (cheddar, mozzarella, or a blend)
• 2 tablespoons fresh parsley, chopped (for garnish)

Step-by-Step Instructions

Step 1: Prepare the Beef and Mushrooms

1. Preheat oven to 375°F (190°C).
2. Heat olive oil in a skillet over medium heat.
3. Add ground beef and cook until browned. Remove excess fat.
4. Stir in onions, garlic, and mushrooms. Cook until softened.
5. Sprinkle flour over the mixture, stir, and cook for 1–2 minutes.
6. Pour in beef broth, milk, Worcestershire sauce, thyme, salt, and pepper. Simmer until sauce thickens. Remove from heat.

Step 2: Layer the Casserole

1. Grease a 9×13-inch baking dish.
2. Arrange half of the potato slices in an even layer.
3. Spread half of the beef-mushroom mixture over the potatoes.
4. Sprinkle with a layer of cheese.
5. Repeat with remaining potatoes, beef mixture, and cheese.

Step 3: Bake

1. Cover with foil and bake for 40 minutes.
2. Remove foil and bake an additional 20 minutes, until potatoes are tender and cheese is golden brown.

Step 4: Serve

Let the casserole rest for 10 minutes before serving. Garnish with fresh parsley.

Tips for Success

• Slice potatoes thinly and evenly so they cook through.
• Use starchy potatoes (like Russet or Yukon Gold) for the best texture.
• Make ahead: Assemble casserole up to a day ahead and refrigerate before baking.
• Extra creamy: Stir in sour cream or cream cheese to the beef mixture for richness.

Variations

• Add veggies: Carrots, peas, or spinach for more nutrition.
• Spicy version: Add chili flakes or jalapeños.
• French onion style: Use caramelized onions for a deeper flavor.
• Lighter option: Use ground turkey or chicken instead of beef.

Why This Recipe Works

This casserole has all the elements of a perfect comfort dish:

• Tender, layered potatoes.
• Rich, savory beef and mushroom sauce.
• Gooey, melted cheese that ties it all together.

It’s hearty enough to stand alone as a full meal but also pairs beautifully with a crisp side salad or roasted vegetables.

Cozy, flavorful, and filling — this Hearty Potato, Beef, and Mushroom Casserole is the kind of dish that brings everyone back for seconds.