
The sausage browns in the skillet, then the onion and bell pepper soften in the same pan and pick up the savory bits left behind. Once those meet the potatoes and cheddar, this cheesy sausage and potato casserole with bell peppers is hearty without needing a separate sauce or a long list of add-ins. It’s the kind of casserole that goes from skillet to baking dish with very little fuss.
Condensed cream of chicken soup gives the filling enough body to coat the potatoes, while sour cream adds a little tang and keeps it from tasting flat. I fold some of the sharp cheddar into the mixture and leave the rest for the top, so there’s cheesy flavor throughout and a golden layer across the surface. The casserole comes out bubbling at the edges, with tender potatoes underneath that crisp-looking top.

Kitchen Note
Drain the thawed hash browns well before they go into the bowl. Extra water can thin the creamy filling, so give the potatoes time to release it before you start mixing.
Save this cheesy sausage and potato casserole for a cozy dinner, with cheddar tucked through the filling and a golden layer on top.
Why the Cheddar Goes in Twice
Putting all the cheese on top seems like the obvious move, but it leaves the potato filling without much cheddar flavor. Here, most of the shredded cheese gets folded into the creamy mixture. It melts among the potatoes as the casserole bakes, so you get a little cheesy richness in each scoop rather than a plain filling under a cheese lid.
The reserved cheese has a different job. Sprinkled over the surface, it melts and browns during the uncovered part of baking, giving the top a more defined color and texture. Sharp cheddar is a good fit because its flavor comes through the cream soup and sour cream. Keep the filling gently folded rather than mashed together; the diced potatoes should stay recognizable, not turn into a smooth mixture.
This two-part approach also makes serving easier. The top gives you that browned, cheesy first bite, while the cheese inside helps the center feel just as savory. If you’ve made casseroles where the topping tastes good but the filling seems bland, dividing the cheddar is a small change with a noticeable payoff.
What Each Ingredient Brings to This Casserole

- Bulk pork sausage — It brings the browned, savory base that seasons the casserole from the start. A grocery-store brand works well; the seasoning varies, so choose one you already enjoy. If you only have pork sausage links, remove the casings and crumble the meat as it cooks.
- Condensed cream of chicken soup and sour cream — The condensed soup gives the filling body, and sour cream adds tang to balance its savory taste. A store-brand condensed soup is fine; avoid ready-to-serve soup because it’s thinner and can leave the filling loose. Plain full-fat Greek yogurt can stand in for sour cream, though it gives the casserole a tangier, slightly less rich finish.
- Frozen diced hash browns — The diced shape gives each serving soft potato pieces that hold together in the creamy filling. Frozen shredded hash browns work as a swap, but they make the texture more compact and less chunky.
- Sharp cheddar — Its fuller flavor holds up against the creamy base. A budget-friendly shredded cheddar works; Monterey Jack is a useful swap if you prefer a milder, softer cheese flavor.
- Yellow onion and bell pepper — They add sweetness and savory depth after softening in the skillet. Standard fresh produce is all you need, and dicing both into similar-sized pieces helps them soften evenly.
From Skillet to Bubbling, Golden Center
Brown the sausage and prepare the dish
Heat the oven to 375°F and grease a 9×13-inch baking dish. Set a 12-inch skillet over medium heat, add the bulk sausage, and break it into small pieces as it cooks. Give it 8–10 minutes to brown, checking that it reaches 160°F before you move on. Drain the excess grease; leaving it in can make the finished filling feel oily.
Soften the onion and bell pepper
Add the diced onion and bell pepper to the skillet with the browned sausage. Cook for 5–7 minutes, stirring occasionally, until the vegetables have softened. They should look less crisp and smell sweet and savory, but they don’t need to brown deeply. If the pan looks dry, keep stirring so the pieces cook evenly instead of sticking in one spot.
Fold the filling together
In a large bowl, stir together the condensed soup, sour cream, garlic powder, kosher salt, and black pepper until the mixture looks smooth. Fold in the thawed hash browns, sausage, vegetables, and most of the cheddar. Use a broad folding motion rather than stirring hard; that keeps the potato pieces intact and spreads the sausage and vegetables through the bowl. The mixture should look coated, not soupy.
Bake until the center is set
Spread the mixture evenly in the prepared dish and sprinkle the remaining cheddar over the top. Cover with foil and bake for 30 minutes, then uncover and bake for another 20–25 minutes. Look for bubbling around the edges and a golden top, and check that the center reaches 165°F. Let the casserole rest for 10 minutes before serving so the filling can settle and scoop more neatly.
Simple Swaps That Change the Casserole
Use hot bulk pork sausage for a little heat
Swap in hot bulk pork sausage for the regular version. It brings the heat into the whole filling as it browns, without changing the casserole’s creamy, potato-forward texture.
Trade cream of chicken for condensed cream of mushroom
Use condensed cream of mushroom soup in place of the cream of chicken soup. The filling keeps its creamy texture but takes on a deeper, earthier flavor.
Make the casserole gluten-free
Replace the condensed cream of chicken soup with a gluten-free condensed cream of chicken soup. The creamy texture stays close to the original, so the potatoes and cheese remain the focus.
Storage and Reheating
- Refrigerator: Refrigerate leftovers within 2 hours and keep them in an airtight container for 3–4 days. The potatoes soften as they sit, but the filling stays creamy.
- Freezer: Freeze cooled portions in an airtight freezer-safe container for up to 2–3 months for best quality. Thaw overnight in the refrigerator.
- Reheating: Warm covered portions in a 350°F oven until hot in the center, or microwave individual servings, pausing to stir or turn them so they heat evenly. Leaving a portion uncovered in the oven for too long can dry the edges before the center warms.
Questions That Come Up Before This Casserole Goes in the Oven

Cheesy Sausage and Potato Casserole with Bell Peppers
Ingredients
Equipment
Method
- Heat the oven to 375°F and grease a 9x13-inch baking dish.
- In a 12-inch skillet over medium heat, cook the sausage for 8–10 minutes, breaking it into small pieces, until browned and it reaches 160°F; drain excess grease.
- Add the onion and bell pepper to the skillet and cook for 5–7 minutes, stirring occasionally, until softened.
- In a large bowl, stir together the soup, sour cream, garlic powder, salt, and black pepper; fold in the hash browns, sausage and vegetables, and 1 1/2 cups of the cheese.
- Spread the mixture in the prepared baking dish and sprinkle with the remaining 1/2 cup cheese.
- Cover with foil and bake for 30 minutes, then uncover and bake for 20–25 minutes, until bubbling around the edges, golden on top, and 165°F in the center.
- Let the casserole rest for 10 minutes before serving.