Cheesy Ground Beef and Scalloped Potato Casserole

A Golden, Oven-Baked Family Feast Featuring Layers of Tender Potatoes and Savory Beef

Nothing screams comfort quite like a bubbling pan of Cheesy Ground Beef and Scalloped Potato Casserole fresh out of the oven. Packed with layers of paper-thin tender potatoes, seasoned ground beef, aromatic onions, and a rich, golden cheddar crust, this classic bake is the ultimate hearty dinner to bring everyone to the table.

By baking this dish in a casserole pan, the edges get deliciously crispy while the center turns creamy, soft, and infused with rich garlic-herb flavors. It is an easy, budget-friendly meal that tastes like hours of hard work with minimal hands-on prep.

I. Why You Will Love This Oven-Baked Casserole

This dish quickly becomes a staple in home kitchens thanks to its unbeatable texture and rich warmth:

Golden Brawny Top Crust: The high oven heat bubbles the cheddar cheese and browns the top potato slices to perfection.
Budget-Friendly Pantry Ingredients: Made with everyday essentials like ground beef, potatoes, milk, and melted cheese.
Perfect Make-Ahead Meal: Assemble the casserole in advance, keep it chilled in the fridge, and pop it into the oven right before dinner.
Hearty & Satisfying: A complete, satisfying all-in-one meal that pairs wonderfully with a simple green side salad.

II. Ingredients & Kitchen Essentials

🛒 Recipe Ingredients

For the Beef & Potato Layers:

1.5 lbs (approx. 700g) ground beef (lean 80/20 or 85/15)
4 large Russet or Yukon Gold potatoes, peeled and thinly sliced
1 medium yellow onion, finely chopped
3 cloves garlic, minced
2 cups sharp cheddar cheese, shredded
Fresh parsley, finely chopped (for garnish)

For the Creamy Cheese Sauce:

3 tbsp unsalted butter
3 tbsp all-purpose flour
2 cups whole milk (or heavy cream for extra richness)
1/2 cup beef broth
1 tsp garlic powder
1/2 tsp onion powder
Salt and freshly cracked black pepper to taste

III. Step-by-Step Cooking Guide

Step 1: Prep the Oven & Pan

Preheat your oven to 375°F (190°C). Generously grease a 9×13-inch baking dish with butter or non-stick cooking spray to prevent sticking.

Step 2: Brown the Beef and Aromatics

In a large skillet over medium heat, add the ground beef and diced onion. Cook until the beef is brown and the onions are soft, breaking up the meat with a wooden spoon. Add the minced garlic and cook for 1 additional minute until fragrant. Season with salt and pepper, drain off excess grease, and set aside.

Step 3: Whisk the Creamy Sauce

In a saucepan over medium heat, melt the butter. Whisk in the flour and cook for 1 to 2 minutes to remove the raw flour taste. Slowly pour in the milk and beef broth, whisking constantly to prevent lumps. Simmer for 3–5 minutes until the sauce thickens. Stir in garlic powder, onion powder, salt, pepper, and 1 cup of shredded cheddar cheese until melted and smooth.

Step 4: Layer and Bake

Arrange half of the sliced potatoes evenly in the bottom of your prepared baking dish. Top with half of the seasoned ground beef mixture, followed by half of the warm cheese sauce. Repeat with the remaining potatoes, ground beef, and sauce. Cover the dish tightly with aluminum foil and bake for 45 minutes.

Step 5: Golden Cheese Crust Finish

Remove the foil, sprinkle the remaining 1 cup of shredded cheddar cheese over the top, and return to the oven uncovered for another 15 to 20 minutes, or until the potatoes are tender when pierced with a fork and the top is golden and bubbling. Garnish with fresh chopped parsley before serving!

💡 Chef’s Secret for Soft Potatoes:

Keeping the casserole covered with foil during the first 45 minutes traps the steam inside, allowing the raw potato slices to cook through and become tender without drying out the creamy sauce!

IV. Final Thoughts & Quick Reference Guide

Blending thin-sliced potatoes, seasoned ground beef, and a homemade cheese sauce yields a rich, golden bake that satisfies every craving. Simple steps and basic ingredients deliver a dish that looks as impressive as it tastes.

🧀 Final Thoughts: Key Elements of Baked Scalloped Casserole

Creating the perfect oven-baked potato casserole relies on thin slicing, steam-baking, and creating a smooth roux-based sauce.

Core Concept	Detailed Explanation	Golden Success Tip
1. Precise Potato Slicing	Slicing potatoes evenly to 1/8 to 1/4-inch thickness guarantees that every layer cooks through completely in the oven without leaving hard centers.	Use a mandoline slicer for uniform thickness so all potato slices finish cooking at the exact same time.
2. Roux-Based Cream Sauce	Making a quick butter-and-flour roux before adding milk creates a silky, thick sauce that binds the potatoes and meat together without separating.	Whisk warm or room-temperature milk into your roux slowly to keep the sauce completely free of lumps.
3. Two-Stage Baking	Baking under foil first steams the dense potato layers to softness, while uncovered baking at the end crisps the edges and browns the cheese top.	Let the casserole rest for 10 minutes after removing it from the oven so the sauce can set before slicing.