My uncle shared this savory homestyle side dish that pairs perfectly with any roast. Only 4 ingredients to make the most deeply flavorful dinner ever.

This slow cooker 4-ingredient Amish onion noodles recipe reminds me of the kind of side dish my uncle would bring to Sunday dinners after tending cattle all day. It’s simple farm cooking: thick egg noodles simmered low and slow in a rich, oniony broth until they soak up every bit of savory flavor, then finished with sweet cream butter for a glossy, comforting finish. Dishes like this have long roots in rural Midwestern and Amish country kitchens, where a good roast in the oven and a crock full of noodles on the counter could quietly feed a crowd without much fuss. If you’ve got a roast in the oven, this is the kind of homestyle side that makes the whole meal feel complete.

Serve these Amish onion noodles spooned into a shallow bowl alongside a beef, pork, or chicken roast so that the rich onion broth can mingle with the pan juices. They’re wonderful with simple sides like buttered green beans, glazed carrots, or a crisp lettuce salad. A slice of crusty bread or a warm dinner roll is handy for soaking up the extra broth. If you’re feeding a crowd, keep the slow cooker on warm right on the table and let everyone ladle their own noodles next to their favorite roast and vegetables.

Servings: 6

2 large yellow onions, thinly sliced

Peel and thinly slice the onions from root to tip so you have plenty of long, even slices. This helps them soften and caramelize nicely in the slow cooker.

Scatter the sliced onions evenly over the bottom of a 4- to 6-quart slow cooker.

Cut 2 tablespoons of the sweet cream butter into small pieces and dot it over the onions. This gives them a rich, buttery flavor as they cook down.

Pour the beef broth over the onions, making sure they are mostly submerged. Give everything a gentle stir, keeping the onions in an even layer.

Cover the slow cooker and cook the onions and broth on HIGH for 3 to 4 hours, or on LOW for 6 to 7 hours, until the onions are very soft, golden, and the broth is a deep, rich brown. The slow cooking brings out a sweet, caramelized onion flavor without any extra ingredients.

Once the onions are deeply softened and the broth is flavorful, taste the broth. If your broth is unsalted and you feel it needs a pinch of salt, you may add a small amount, but remember that the butter and noodles will also add flavor.

Stir the onion mixture, then add the egg noodles directly into the slow cooker, pressing them gently down so they are mostly covered by the hot onion broth. If using frozen noodles, break up any clumps so they cook evenly.

Cover and cook on HIGH for 25 to 40 minutes, stirring gently every 10 minutes or so, until the noodles are tender but not mushy and have absorbed some of the broth. The mixture should look like thick noodles swimming in a glossy, dark onion broth.

When the noodles are just tender, cut the remaining 2 tablespoons of sweet cream butter into small pieces and stir it into the hot noodles until fully melted and the surface looks shiny and rich.

Let the noodles sit on WARM for about 5 to 10 minutes to thicken slightly. Give a final gentle stir, making sure the soft golden onion slices are distributed throughout, then serve the noodles straight from the slow cooker while steaming hot.

For a slightly lighter flavor, you can use half beef broth and half chicken broth, though the full beef broth gives the deepest, roast-friendly taste. If you prefer a softer, almost dumpling-like texture, let the noodles cook a few minutes longer and rest a bit more on WARM so they soak up extra broth. For a stronger onion presence, use 3 onions instead of 2, or choose sweeter varieties like Vidalia for a milder, caramel-like flavor. If you only have unsalted butter, that works too—just taste the broth and adjust the seasoning at the end. Dried Amish-style egg noodles hold up especially well to slow cooking, while frozen homestyle noodles give a slightly thicker, chewier bite; both are good, so use what you can find. To stretch this dish for a big family supper, add up to 2 extra cups of broth and another handful of noodles, then cook until tender. Leftovers reheat nicely on the stovetop or in the microwave with a splash of extra broth or water to loosen the noodles back to a silky, brothy consistency.