Beef and Smoked Sausage Tater Tot Casserole

This hearty casserole combines seasoned ground beef and smoked sausage with sautéed onions and peppers, bound in a creamy mushroom sauce, then topped with crispy frozen tater tots and melted cheddar. It's a comfort food classic that feeds a crowd with minimal hands-on time. The Cajun seasoning and fresh basil add depth to what could otherwise be a simple weeknight dish. Serve for casual family dinners or potlucks where crispy, loaded comfort food wins every time.
Ingredients
- 10 ounce canned cream of mushroom or chicken soup, original
- 1 cup whole milk
- ½ tablespoon olive oil
- ½ cup Vidalia or sweet onion, chopped
- ¼ cup green bell pepper, chopped
- 1 pound lean ground beef
- 1 teaspoon garlic, minced
- ½ pound smoked sausage, chopped(optional)
- 1 tablespoon fresh basil, chopped
- ½ teaspoon dried thyme
- ¼ to 0.5 teaspoon, Creole or Cajun seasoning
- kosher salt
- freshly cracked black pepper
- ½ cup cheddar cheese, shredded, divided
- 1 pound frozen tater totssliced frozen hash browns1:1texture-swap
less crispy, more cohesive top layer
Instructions
- 1
Preheat oven to 350 degrees F and butter or spray a 9 by 9 inch casserole dish.
- 2
Whisk together cream soup and milk until blended.
- 3
Heat olive oil in a large skillet and sauté onion and bell pepper until softened, about 5 minutes.
- 4
Add ground beef to the skillet and brown, draining excess fat if needed.
- 5
Stir in garlic and cook for 1 minute, then add smoked sausage and cook for 3 minutes.
- 6
Stir in basil, thyme, and Cajun seasoning, then taste and adjust salt and pepper.
- 7
Transfer meat mixture to prepared casserole and sprinkle with 1/4 cup cheddar cheese.
- 8
Pour soup mixture evenly over top and arrange tater tots in a single layer.
- 9
Bake uncovered at 350 degrees F for 45 minutes to 1 hour until potatoes are browned and crisp.
- 10
Sprinkle remaining 1/4 cup cheese on top and return to oven until melted.
- 11
Serve immediately with a green vegetable or salad.
Tips
Brown the meat thoroughly and drain excess fat to prevent a greasy casserole; the mushroom sauce adds richness, so lean beef is key.
Arrange tater tots in a single snug layer to ensure even crisping and browning across the top.
Make this the morning of serving: prepare through the tater tot topping, refrigerate, then bake when ready, adding 10-15 minutes to cooking time.
Good to Know
Cover and refrigerate leftovers up to 3 days. Reheat covered in a 350 degree F oven for 15-20 minutes until warmed through.
Assemble through tater tot topping the night before, cover, and refrigerate. Bake from cold, adding 10-15 minutes to total bake time.
Serve hot directly from the casserole dish with a side of steamed green beans, roasted broccoli, or a crisp garden salad to cut the richness.
Common Mistakes
Skip draining the ground beef to avoid a greasy, separated sauce.
Crowd the skillet when browning meat to avoid steaming instead of searing.
Add cheese to the top too early to avoid it burning before the potatoes crisp.
Substitutions
Dairy-Free Swaps
General Alternatives
control heat level
Full guide →less crispy, more cohesive top layer
FAQ
Can I make this in a 9 by 13 inch pan?
Yes, double all ingredients as the recipe notes. Increase bake time to 50-60 minutes and check that tater tots are golden and crispy before removing. The larger surface area may require an extra 5-10 minutes.
Can I freeze this casserole?
Freeze unbaked through the tater tot layer up to 2 months. Thaw overnight in the fridge, then bake as directed, adding 15 minutes to cooking time. Freeze baked leftovers up to 1 month; reheat covered at 325 degrees F until heated through.
What if I don't have Cajun seasoning?
Mix 1/4 teaspoon paprika, 1/8 teaspoon cayenne, 1/8 teaspoon garlic powder, and a pinch each of dried oregano and thyme. Taste and adjust salt and heat to preference.