This slow cooker 5-ingredient Amish green bean noodle casserole is the kind of old-fashioned comfort food that disappears at every church basement supper and spring potluck. My aunt has been toting a crock full of this creamy, golden noodle-and-green-bean goodness for as long as I can remember, and it always comes back scraped clean.
It’s built on simple pantry staples the way farm wives have cooked for generations: tender egg noodles, garden-style green beans, a can or two of soup, and a buttery, oniony topping that turns crisp around the edges. Everything goes right into the slow cooker, so it’s easy enough for a weeknight, but nostalgic and cozy enough for a holiday table.
Serve this casserole straight from the slow cooker while it’s hot and creamy, with a big spoon for scooping. It pairs wonderfully with baked ham, roasted chicken, or meatloaf, plus a simple side like sliced tomatoes or a crisp lettuce salad to balance the richness.
Warm dinner rolls, buttered bread, or cornbread are perfect for soaking up the sauce. For a full potluck spread, set it alongside deviled eggs, coleslaw, and a fruit salad, and let folks help themselves right from the crock.
Slow Cooker Amish Green Bean Noodle Casserole
Servings: 6-8
Ingredients
12 oz wide egg noodles
2 (14.5 oz) cans cut green beans, drained
2 (10.5 oz) cans condensed cream of mushroom soup
1 1/2 cups whole milk
2 cups crispy fried onions, divided
Directions
Lightly spray the inside of a 4- to 6-quart slow cooker with nonstick cooking spray to help with cleanup later.
In a large bowl, whisk together the condensed cream of mushroom soup and the whole milk until smooth and well combined. This will be your creamy sauce.
Add the uncooked egg noodles, drained green beans, and 1 cup of the crispy fried onions to the bowl with the sauce. Gently stir until all the noodles and beans are coated and the onions are evenly distributed.
Pour the mixture into the prepared slow cooker, spreading it out into an even layer so the noodles cook uniformly.
Cover the slow cooker with the lid and cook on LOW for 3 to 4 hours, or until the noodles are tender but not mushy and the sauce is hot and bubbly. Avoid lifting the lid too often so the heat and moisture stay trapped inside.
Once the noodles are tender, gently stir the casserole from the bottom up to redistribute the sauce and make sure nothing is sticking. Taste and adjust seasoning with a little salt and black pepper if you like, keeping in mind the fried onions are salty.
Sprinkle the remaining 1 cup of crispy fried onions evenly over the top of the hot casserole. Cover and cook on HIGH for 10 to 15 minutes, just until the onions warm through and crisp back up on top.
Serve the casserole straight from the slow cooker on the warm setting. The sauce will thicken slightly as it stands, giving it that rich, buttery, old-fashioned texture everyone loves at potlucks.
Variations & Tips
For extra richness, you can swap part of the milk for half-and-half or add a small handful of shredded cheddar cheese to the mixture before cooking, though the classic Amish-style version keeps it simple. If you prefer, use one can of cream of mushroom and one can of cream of chicken soup for a slightly different flavor.
Frozen green beans can be used in place of canned; there’s no need to thaw, but add an extra 15–30 minutes to the cooking time if needed. For a bit of color, stir in a cup of frozen peas and carrots along with the green beans. If you like a more pronounced onion flavor, add 1 teaspoon of onion powder or a small handful of finely minced onion to the sauce.
To make this ahead for a potluck, you can assemble everything in the slow cooker crock, cover, and refrigerate up to 12 hours, then place the cold crock into the base and cook on LOW, adding 30–45 minutes to the time. For food safety, do not leave the finished casserole at room temperature for more than 2 hours; keep it on the warm setting at the potluck and refrigerate leftovers promptly in shallow containers.
Reheat leftovers thoroughly until steaming hot before serving, and discard any casserole that has sat out too long or has an off smell or appearance.