Sausage Casserole with Beans and Tender Vegetables

Sausage casserole is a one-pot dinner of browned pork sausages, potatoes, white beans and vegetables in a savory tomato-and-stock gravy. Baking it covered first keeps the vegetables tender, while a final uncovered stretch thickens the sauce into a hearty meal that is easy to serve straight from the pot.

Ingredients

6 pork sausages, about 1½ lb (680 g) total
1 tbsp olive oil (15 ml)
1 medium yellow onion, diced, about 1 cup (150 g)
2 medium carrots, sliced into ¼-inch rounds, about 1 cup (130 g)
2 celery ribs, diced, about ¾ cup (90 g)
2 garlic cloves, finely chopped, about 2 tsp (6 g)
2 tbsp tomato paste (30 g)
1 tsp smoked paprika (2 g)
1 tsp dried thyme (1 g)
1½ cups low-sodium chicken or vegetable stock (360 ml)
1 can diced tomatoes, 14.5 oz (411 g), including the juices
1 tbsp Worcestershire sauce (15 ml)
1 tsp Dijon mustard (5 g)
12 oz waxy potatoes, cut into ½-inch cubes, about 2 cups (340 g)
1 can cannellini or great northern beans, 15 oz (425 g), drained and rinsed; about 1½ cups (260 g) after draining
½ tsp fine salt (3 g), plus more to taste
¼ tsp black pepper (0.5 g), plus more to taste
2 tbsp chopped fresh parsley (8 g), for serving

Instructions

Heat the oven to 375°F (190°C). Dice the onion and celery, slice the carrots, cube the potatoes and rinse the beans. Set out the remaining ingredients so they are ready to add. Allow about 18 minutes for this preparation and for the oven to heat.
Set a large oven-safe Dutch oven or casserole pot over medium heat and add the oil. Add the sausages and brown them, turning every few minutes, for about 10 minutes. They do not need to be cooked through yet; browning builds flavor, and the oven finishes cooking them. Transfer them to a plate. If the sausages release a lot of fat, carefully spoon off all but about 1 tablespoon.
Add the onion, carrots and celery to the pot. Cook for about 7 minutes, stirring often, until the onion begins to soften. Stir in the garlic, tomato paste, smoked paprika and thyme; cook for 1 minute, taking care not to scorch the garlic or paste.
Pour in the stock and diced tomatoes, then stir in the Worcestershire sauce and mustard, scraping up the browned bits from the pot. Add the potatoes, beans, salt and pepper, and stir to combine. Nestle the sausages into the mixture. This assembly should take about 5 minutes. The liquid will not completely cover every ingredient, which is fine.
Cover the pot with a tight-fitting lid and bake for 30 minutes. Remove the lid and bake for another 15 minutes, until the potatoes are tender and the sauce has thickened slightly. Check the thickest part of a sausage with a food thermometer: pork sausage made from ground meat must reach the USDA FSIS safe minimum internal temperature of 160°F (71°C). If it has not reached that temperature, continue baking and check again after a few minutes.
Take the pot from the oven and let the casserole stand for 5 minutes so the sauce settles and is easier to ladle. Taste the gravy and adjust the salt and pepper. Sprinkle with parsley and serve hot. The timed cooking period is 1 hour 12 minutes, including this short rest.

Tips

Choose sausages with care. Mild or herby pork sausages keep the tomato gravy balanced; spicy sausages make the whole casserole noticeably hotter. Sausages vary in size, so use the thermometer rather than relying on color or the stated baking time alone. If your sausages are especially thick, they may need a few extra minutes in the oven.
Cut the potatoes evenly. Pieces about ½ inch across should soften in the stated baking time. Larger chunks may stay firm in the middle, while very small pieces can break down into the sauce. Waxy potatoes such as red or Yukon Gold hold their shape well; russets work too but make the gravy softer and starchier.
Keep the sauce from getting too salty. Stock, canned tomatoes and sausages can all contain salt, so start with the measured amount and taste after baking before adding more. If the finished gravy seems too thick, stir in a splash of hot stock or water. If it seems thin, leave the lid off and bake for a few additional minutes.
Use a suitable pot. A Dutch oven or other heavy, oven-safe pot with a lid gives the vegetables steady heat and helps keep the casserole moist. If your pot has no lid, cover it tightly with foil for the first 30 minutes, then remove the foil for the final 15 minutes.

Serving Suggestions

This casserole is filling on its own, so simple sides work best. Serve it with crusty bread, warm rolls or a slice of rustic sourdough for scooping up the tomato gravy. A green salad with a sharp vinaigrette adds freshness and contrast, while steamed cabbage, green beans or broccoli make an easy vegetable side. For a more substantial plate, spoon the casserole over mashed potatoes or buttered egg noodles; reduce the amount of potato in the pot if you choose a starchy side.

For serving, use a large spoon to include sauce, beans and vegetables with each sausage. If you are feeding a group, keep the pot covered between portions so the food stays warm, and return it to the oven or stovetop if it needs reheating. Add the parsley at the table rather than before storage, if you want the garnish to stay bright.

Variations

Make it spicier: Use hot pork sausages, or add ¼ teaspoon of crushed red pepper with the paprika. Start with a small amount because spicy sausage can bring plenty of heat by itself. For a milder, more savory version, use sweet Italian-style or plain pork sausages and keep the smoked paprika.

Change the beans or vegetables: Kidney beans or butter beans can replace the cannellini beans in the same quantity. Chopped bell pepper can replace some of the celery, and mushrooms can be added with the onion; allow them to cook until their moisture has mostly evaporated before adding the liquids. For frozen peas, stir in about 1 cup (150 g) during the final 5 minutes of baking so they keep their color and shape.

Try a different sausage: Turkey or chicken sausages can stand in for pork, though they may be leaner and release less fat, so keep the full tablespoon of oil for browning. Poultry sausage must reach 165°F (74°C); check the center with a thermometer. Vegetarian sausages also work, but many are already cooked and can soften if baked for the full time. Brown them separately, bake the casserole without them, and stir them in near the end according to their package directions.

Make the gravy without Worcestershire: Use an equal amount of soy sauce, or leave it out and add a little extra mustard and a pinch of black pepper. Soy sauce makes the gravy saltier and less tangy, so taste before seasoning. For a gluten-free version, check that the sausages, stock, mustard and Worcestershire sauce are labeled gluten-free, or use a suitable gluten-free substitute.

Storage and Reheating

Refrigerate leftovers within 2 hours of cooking in a shallow, covered container. They keep for 3 to 4 days in the refrigerator. The sauce may thicken as it cools, and the potatoes will absorb some liquid; add a small splash of stock or water when reheating to loosen it. Store the sausages and vegetables with the gravy rather than separately so they stay moist.

Reheat only the portion you plan to eat, either in a covered saucepan over medium-low heat or in a microwave-safe dish, stirring or turning the food partway through. Add a spoonful of water or stock if needed. Reheat leftovers to 165°F (74°C), checked with a food thermometer, before serving. If reheating the whole casserole in the oven, cover it and heat at 350°F (175°C) until hot throughout, then verify the center reaches 165°F (74°C). For longer storage, freeze cooled portions in airtight freezer-safe containers; thaw in the refrigerator and reheat to 165°F (74°C). Texture may soften slightly after freezing, especially the potatoes.

Frequently Asked Questions

Can I make sausage casserole ahead?
Yes. Cook it fully, cool it promptly, and refrigerate it in a covered container. Reheat it when needed to 165°F (74°C). You can also chop the vegetables and measure the seasonings a day ahead, keeping them covered in the refrigerator; brown and assemble the casserole shortly before baking for the best texture.

Can I make this recipe on the stovetop?
Yes, if you have a heavy pot with a lid. After browning the sausages and softening the vegetables, add the remaining ingredients, cover, and simmer gently until the potatoes are tender, stirring occasionally so nothing catches on the bottom. Check that the pork sausages reach 160°F (71°C) and add a little stock if the sauce reduces too quickly. Stovetop timing can vary with the pot and burner, so use tenderness and temperature as your guide.

Can I use dried beans instead of canned?
Use dried beans only after cooking them separately until tender; dried beans will not reliably become soft during this casserole’s oven time. Measure about 1½ cups (260 g) of cooked, drained beans to replace the can. Do not add the bean-cooking liquid unless you want a thinner, beanier-tasting gravy.

Why is my casserole watery?
Different canned tomatoes and vegetables release different amounts of liquid. Remove the lid and bake for a few more minutes to help the sauce reduce, or simmer the pot uncovered on the stovetop. If you prefer a thicker gravy, mash a few beans or potato pieces against the side of the pot and stir them in. Letting the casserole stand for 5 minutes after baking also helps the sauce settle.

Can I use frozen sausages?
Thaw sausages safely in the refrigerator before browning so they cook more evenly and are easier to handle. Avoid thawing them on the counter. If they are still partly frozen, the browning and baking times will be less predictable; cook until the center reaches the appropriate safe temperature rather than relying on the recipe’s usual timing.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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