1️⃣ Preheat your oven to 350°F (175°C). 🔥

2️⃣ Brown the beef: In a large skillet over medium-high heat, cook the ground beef until it’s browned and crumbly, about 5 to 7 minutes. Drain off the excess grease and set aside. 🍳

3️⃣ Prepare the soup mixture: In a medium bowl, combine the condensed cream of mushroom soup, milk, chopped onion, salt, and pepper. 🥣

4️⃣ Layer the ingredients: In a 2-quart baking dish, create alternating layers of thinly sliced potatoes, the soup mixture, and the browned ground beef. 🍲

5️⃣ Bake: Place the dish in the preheated oven and bake until the potatoes are tender, which should take about 1 to 1 1/2 hours. ⏳

6️⃣ Add cheese: Sprinkle the shredded Cheddar cheese over the top and return to the oven. Continue baking just until the cheese has melted and is bubbly. 🧀