Step 1: Preheat the Oven
Preheat your oven to 375°F (190°C).
This ensures the casserole bakes evenly and the tater tots get nice and crisp.
While the oven heats up, you can start preparing the beef mixture.

Step 2: Cook the Ground Beef
In a skillet over medium heat, brown the ground beef until no longer pink.
Add the diced onions and cook until they become soft and translucent.
Season the mixture with salt, pepper, and any optional spices like garlic powder or paprika.
Drain any excess fat to avoid a greasy casserole.

Step 3: Combine with Cream Sauce
Stir the cream of mushroom soup into the cooked beef and onions.
Add the sour cream and mix everything until it’s well combined.
Let the mixture heat through for 2–3 minutes so the flavors can meld together.
This creamy, savory blend becomes the base layer of your casserole.

Step 4: Layer in the Casserole Dish
Grease your baking dish to prevent sticking.
Spread the beef and cream mixture evenly across the bottom of the dish.
Smooth it out with a spatula to create an even foundation.
This step sets the stage for all the melty, crunchy layers to come.

Step 5: Add Cheese Layer
Sprinkle 1 cup of shredded cheddar cheese over the beef layer.
This cheese will melt into the hot meat mixture during baking.
It adds flavor, texture, and helps bind the casserole together.
Don’t skimp on this layer—it’s where the magic starts.

Step 6: Add Tater Tots
Arrange frozen tater tots in a single, even layer on top of the cheese.
You can line them up neatly or simply scatter them evenly over the surface.
The key is to make sure they’re evenly spaced so they crisp up in the oven.
Avoid overlapping them, or some may stay soft instead of getting golden.

Step 7: Bake
Place the dish in the oven and bake for 25–30 minutes.
You’ll know it’s ready when the tater tots are crispy and golden brown.
The cheese should be bubbling and slightly browned around the edges.
The aroma will tell you it’s time to pull it out.

Step 8: Add Final Cheese Layer
Remove the casserole from the oven and sprinkle the remaining cup of cheese on top.
Return it to the oven for another 5 minutes, just until the cheese is fully melted.
This final step adds that ooey-gooey finish that makes every bite irresistible.
Let the casserole cool slightly before serving—it’ll hold together better.

Step 9: Serve
Allow the casserole to rest for 5 minutes before slicing into it.
This makes it easier to scoop and serve without falling apart.
Pair it with a side salad or steamed veggies for a complete meal.
It’s comfort food at its absolute best.