When you’re craving a cozy, filling dinner that feels like a warm hug, this Hearty Ground Beef & Potato Casserole delivers every time. With layers of tender sliced potatoes, savory ground beef, and a creamy mushroom sauce, this classic comfort bake is the kind of meal that brings everyone running to the table.
Finished with melted cheddar cheese and a crispy French fried onion topping, this ground beef and potato casserole is simple, satisfying, and perfect for busy weeknights, potlucks, or make-ahead family dinners. It’s old-fashioned comfort food done right.
Why You’ll Love This Recipe
- Ultimate comfort food: Warm, creamy, and deeply satisfying
- Family-friendly: Mild flavors everyone loves
- Easy to make: Simple ingredients and straightforward steps
- Make-ahead ready: Perfect for meal prep or busy evenings
- One-dish dinner: Protein, veggies, and potatoes all in one
- Crispy topping: Golden fried onions add irresistible crunch

Step-by-Step Instructions
Step 1: Preheat and Prep
First, preheat the oven and lightly grease a large casserole dish so nothing sticks during baking.
Step 2: Cook the Ground Beef
Next, brown the ground beef in a skillet over medium heat, breaking it up as it cooks. Once fully cooked, drain off any excess grease.
Step 3: Sauté the Vegetables
Then, add the onion, bell pepper, and garlic to the beef. Cook until the vegetables soften and everything smells fragrant. Add a splash of water or broth if needed to keep the mixture moist.
Step 4: Make the Creamy Sauce
In a bowl, whisk together the cream of mushroom soup and sour cream until smooth. Season well with salt and black pepper.
Step 5: Layer the Potatoes
Arrange half of the sliced potatoes in the bottom of the casserole dish. Season lightly, then add the remaining potatoes to create even layers.
Step 6: Add the Beef Mixture
Spoon the cooked beef and vegetable mixture evenly over the potatoes.
Step 7: Pour the Sauce
Spread the creamy mushroom sauce over the beef layer, making sure everything is well covered.
Step 8: Add Cheese
Sprinkle shredded cheddar cheese evenly across the top.
Step 9: Bake Covered
Cover the casserole tightly with foil and bake until the potatoes are fork-tender and the casserole is hot and bubbly.
Step 10: Add the Crispy Topping
Remove the foil and sprinkle French fried onions over the top. Return the casserole to the oven until the onions are golden and crisp.
Step 11: Rest and Serve
Finally, let the casserole rest briefly before slicing and serving.

Tips for Best Results
- Slice potatoes thinly: Ensures they cook evenly
- Season each layer: Potatoes need salt for flavor
- Cover tightly while baking: Helps steam the potatoes
- Add onions at the end: Keeps them crispy
- Rest before serving: Helps the casserole set
FAQs
Can I make ground beef and potato casserole ahead of time?
Yes, assemble it up to a day ahead and refrigerate until ready to bake.
What potatoes work best for this casserole?
Russet potatoes are classic, but Yukon Golds also work well.
Can I freeze this casserole?
Yes, freeze it before adding the fried onion topping for best texture.
How do I know when the potatoes are done?
A fork should slide in easily with no resistance.
What can I serve with this casserole?
A green salad or steamed vegetables pair perfectly.

