01 -
Preheat oven to 375°F. Peel and thinly slice 2 lbs Russet potatoes. Dice 1 large yellow onion and mince 3 cloves garlic. Lightly grease a 9x13 inch baking dish. This initial prep sets the stage for your delicious Cheesy Ground Beef and Potato Casserole.
02 -
Heat 1 tbsp olive oil in a large skillet over medium-high heat. Add 1.5 lbs lean ground beef (85/15) and cook, breaking it apart, until browned. Drain excess fat. Stir in the diced 1 large yellow onion and minced 3 cloves garlic; cook until softened, about 5 minutes.
03 -
Season the beef mixture with 1 tsp kosher salt, 1/2 tsp black pepper, 1 tsp smoked paprika, and 1 tsp dried oregano. Cook for another minute until fragrant. Remove from heat and set aside. This savory base is crucial for your Cheesy Ground Beef and Potato Casserole.
04 -
In a separate saucepan, melt 2 tbsp unsalted butter over medium heat. Whisk in 2 tbsp all-purpose flour and cook for 1 minute. Gradually whisk in 1.5 cups whole milk and 1 cup beef broth until smooth and thickened. Stir in 2 cups sharp cheddar cheese and 1 cup mozzarella cheese until melted and creamy.
05 -
Spread half of the thinly sliced 2 lbs Russet potatoes in the prepared baking dish. Top with half of the seasoned ground beef mixture, then pour half of the cheese sauce over it. Repeat layers with the remaining potatoes, beef, and cheese sauce.
06 -
In a small bowl, combine 1/2 cup Panko breadcrumbs with 2 tbsp melted unsalted butter. Sprinkle evenly over the top of the casserole. Bake for 40 minutes, or until the potatoes are tender and the topping is golden brown.
07 -
Remove the Cheesy Ground Beef and Potato Casserole from the oven and let it rest for 10-15 minutes before serving. This allows the layers to set and makes for easier, cleaner slices. Enjoy this comforting meal!