This Sausage Green Bean Potato Casserole is the kind of dinner you make once and then keep making. It’s got a little bit of everything—crispy sausage, soft potatoes, and buttery green beans that actually taste good without any fancy steps, all baked together in a garlic broth that brings it all together.
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When I need dinner that works for just about anyone, whether picky eaters or big appetites, this one covers it. It’s a solid option for Sunday dinners or when we’ve got friends hanging around after school or work. I love that I can make it ahead or freeze it for later—makes everything feel just a little more under control.
Ingredients You’ll Need
You’ll need all the ingredients shown in the photograph below.
How to Make Sausage Casserole with Step-By-Step Instructions
Scroll down for the full recipe card containing a full printable recipe and measurements in both US customary and metric units.
You won’t need much kitchen experience to pull this off—just follow my easy instructions and let your oven do the heavy lifting.
Prep the Potatoes
Start by washing and halving your small potatoes. Toss them in a large bowl with olive oil, garlic powder, salt, and black pepper.
Make sure each piece gets coated evenly—that’s how you’ll get great flavor in every bite.
Brown the Sausage
In a large skillet, cook the sausage slices over medium-high heat until they’re browned and just starting to crisp on the edges. This adds depth and helps them hold their shape in the bake.
Remove them from the pan and let them cool slightly before adding them to the bowl with the potatoes. If they go in too hot, they can steam the potatoes and make everything a bit soggy.
SERIOUSLY GOOD
CASSEROLES
37 EASY RECIPES designed for days when you want one dish to do all the work for you. Expect rich, mouthwatering layers that are just begging to be on your dinner table.
Immediate eBook download. No physical book available.
Includes ad-free recipes like:
∙ Breakfast Casserole
∙ Cheeseburger Casserole
∙ Four Cheese Ravioli Casserole
∙ Chicken Pot Pie Casserole
∙ Sweet Potato Casserole
...and much more!
Sauté the Onion and Garlic
Melt the butter in the same pan, then cook the chopped onions and garlic until soft and fragrant.
Again, you’ll want to let this mixture cool slightly for a few minutes before adding it to your bowl so it doesn’t steam the other ingredients.
Add the Green Beans and Broth
Toss the thawed green beans and a bit of chicken broth into the bowl with your potatoes, sausage, and sautéed onions. Stir it all together so the broth and buttery garlic flavors coat everything nicely.
If you wanted to add some extra veggie goodness, then you could add some spinach, mushrooms, or carrots.
Bake the Casserole
Spoon the mixture into a 9×13-inch casserole dish greased with a non-stick spray, cover with foil, and bake at 400°F for around 40 minutes.
You’ll know it’s ready when the potatoes are tender and everything is hot and bubbling.
Serve Hot
Once it’s out of the oven, let the casserole sit covered for a few more minutes, so the flavors finish melding together. It also makes it easier to serve since the ingredients won’t fall apart as easily.
After resting, carefully lift off the foil to avoid a rush of hot steam, then scoop and serve while everything’s still warm and fresh. Enjoy!
Sausage Green Bean Potato Casserole
Add Preferred SourceIngredients
- 2 pounds small potatoes washed and halved
- 2 tablespoons olive oil
- 1 teaspoon garlic powder
- Salt and pepper to taste
- 1 ½ pounds sausage kielbasa sliced ¼” thick *or your favorite sausage.
- 2 cups green beans frozen and thawed
- ¼ cup butter
- 1 cup onions chopped
- 3 cloves garlic minced
- ¼ cup chicken broth
Instructions
- Preheat the oven to 400°F (200°C) and lightly grease a 9×13-inch baking dish with non-stick spray.
- In a large bowl, toss the halved potatoes with olive oil, garlic powder, salt, and pepper until evenly coated.2 pounds small potatoes, 2 tablespoons olive oil, 1 teaspoon garlic powder, Salt and pepper
- Heat a large frying pan over medium-high heat and cook the sausage slices until browned. Remove from the pan and let cool slightly before adding them to the bowl with the potatoes.1 ½ pounds sausage kielbasa
- In the same pan, melt the butter, then sauté the chopped onions and minced garlic until the onions turn translucent. Allow the mixture to cool for a few minutes before adding it to the bowl with the potatoes and sausage.¼ cup butter, 1 cup onions, 3 cloves garlic
- Add the thawed green beans and chicken broth, mixing everything together until well combined.2 cups green beans, ¼ cup chicken broth
- Transfer the mixture to the prepared baking dish, cover with foil, and bake for 40 minutes or until the potatoes are tender.
- Serve warm and enjoy!
Notes
- Choose the Right Potatoes: Smaller potatoes like baby golds or red potatoes hold up well during baking and give you that tender, fluffy texture.
- Get a Good Sear on the Sausage: Browning the sausage brings out more flavor and keeps it from turning soft in the oven. Don’t skip this step.
- Cool the Sautéed Mix Before Combining: Warm onions and garlic can steam the potatoes and change their texture, so give them a few minutes to cool.
- Drain the Green Beans if Needed: After thawing, pat the beans dry so you don’t end up with too much liquid in your casserole.
- Mix Gently but Thoroughly: Use a large spoon to combine everything without mashing the potatoes. This keeps the texture nice and hearty.
- Cover the Casserole Tightly: Foil traps the moisture and helps everything bake evenly without drying it out.
- Check for Doneness with a Fork: The casserole’s ready when a fork easily slides into the potatoes—don’t be afraid to give it an extra 5 minutes if needed.
- Rest Before Serving: Let it sit for a few minutes once it’s out of the oven so the juices settle and serving is easier.
Nutrition
SERIOUSLY GOOD
CASSEROLES
37 EASY RECIPES designed for days when you want one dish to do all the work for you. Expect rich, mouthwatering layers that are just begging to be on your dinner table.
Immediate eBook download. No physical book available.
Includes ad-free recipes like:
∙ Breakfast Casserole
∙ Cheeseburger Casserole
∙ Four Cheese Ravioli Casserole
∙ Chicken Pot Pie Casserole
∙ Sweet Potato Casserole
...and much more!
Recipe Notes and Expert Tips
I’ve made this a bunch of times and picked up some helpful tricks to get it just right every time.
- Choose the Right Potatoes: Smaller potatoes like baby golds or red potatoes hold up well during baking and give you that tender, fluffy texture.
- Get a Good Sear on the Sausage: Browning the sausage brings out more flavor and keeps it from turning soft in the oven. Don’t skip this step.
- Sausage Choices: We’ve used a Polish sausage, but if you can’t find them, then you can use hot Italian sausage, chorizo, or your favorite sausages.
- Cool the Sautéed Mix Before Combining: Warm onions and garlic can steam the potatoes and change their texture, so give them a few minutes to cool.
- Drain the Green Beans if Needed: After thawing, pat the beans dry so you don’t end up with too much liquid in your casserole.
- Mix Gently but Thoroughly: Use a large spoon to combine everything without mashing the potatoes. This keeps the texture nice and hearty.
- Cover the Casserole Tightly: Foil traps the moisture and helps everything bake evenly without drying it out.
- Check for Doneness with a Fork: The casserole’s ready when a fork easily slides into the potatoes—don’t be afraid to give it an extra 5 minutes if needed.
- Rest Before Serving: Let it sit for a few minutes once it’s out of the oven so the juices settle and serving is easier.
How to Store Leftovers
If you have leftovers, just store them in an airtight container in the fridge for up to 3-4 days. When you’re ready to reheat, pop a portion in the microwave or warm it in the oven at 350°F until hot.
This casserole can also be kept in the freezer for up to 3 months—just make sure it cools completely before transferring to a freezer-safe container, and note that the texture of the green beans and potatoes might slightly change.
When you want to serve it again, let it thaw overnight in the fridge before reheating.
What to Serve With Casserole
This dish is hearty enough to stand on its own, but it’s also easy to pair. A fresh garden salad or some coleslaw adds a little crunch and contrast.
You could also serve it with cornbread, crusty garlic bread, or even a simple bowl of soup, like egg drop soup, if you’re stretching it for more people.
More Easy Casserole Recipes for You to Try at Home
I’ve got more fuss-free, easy casseroles that are as filling as this one that you’ll want to try next:
