Ground Beef, Potato, and Mushroom Casserole

Why You’ll Love This RecipeSimple ingredients – Uses pantry staples like cream of mushroom soup, sour cream, and potatoes.One-pan dinner – Everything bakes in a single casserole dish for easy cleanup.Comforting layers – Creamy, cheesy, and finished with crispy onions for the perfect bite.Family-friendly – Even picky eaters love this classic.Ingredients1 pound lean ground beef½ cup yellow onion, diced1 green bell pepper, diced2 cloves garlic, minced2–3 medium russet potatoes, peeled and thinly sliced1 (10.75-ounce) can condensed cream of mushroom soup1 cup sour cream1 cup shredded cheddar cheeseSalt and pepper, to tasteFrench fried onions, for toppingOptional: sliced green onions or chopped fresh parsley for garnishStep-by-Step InstructionsStep 1 – Preheat OvenPreheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish.Step 2 – Prep VegetablesPeel and slice the potatoes thinly. Dice the onion and bell pepper, then mince the garlic.Step 3 – Cook the BeefIn a skillet over medium heat, cook the ground beef until browned. Add onion, bell pepper, and garlic, cooking until softened. Season with salt and pepper. Drain excess fat.Step 4 – Make the SauceIn a bowl, whisk together the cream of mushroom soup and sour cream until smooth.Step 5 – Assemble the CasseroleLayer the dish in the following order:Thinly sliced potatoesGround beef and veggie mixtureCreamy mushroom sauceRepeat the layers, finishing with sauce. Sprinkle shredded cheddar cheese on top.Step 6 – BakeCover with foil and bake for 45 minutes. Remove the foil, top with French fried onions, and bake uncovered for another 10–15 minutes, until potatoes are tender and the topping is golden and crispy.Step 7 – ServeLet the casserole rest for 5 minutes before serving. Garnish with fresh parsley or green onions if desired.Tips & VariationsMake it spicy: Add diced jalapeños or red pepper flakes to the beef mixture.Swap the soup: Use cream of chicken or cream of celery soup for a flavor twist.Cheese lovers: Add extra cheddar or even pepper jack for a bolder taste.Meal prep friendly: Assemble up to a day in advance, cover, and refrigerate until ready to bake.Serving SuggestionsThis hearty casserole pairs wonderfully with a crisp green salad or roasted vegetables. It’s also delicious served with crusty bread to soak up the creamy sauce.