What to Make With Potatoes and Onions: 3 Fast Weeknight Dinners

Potatoes and onions are dinner if you commit to browning them and put an egg or a can of beans on the plate. Alone they are a side. These three treat them as the main: a hash, a sheet pan, and a soup. The onion should go soft and sweet, not stay crunchy and sharp, unless someone likes it that way. Got more in the fridge? Snap a photo and we'll pick dinner for you. Free.

Quick picks: 3 dinners with potatoes and onions in 30 minutes or less

Fastest option: a 20-minute dinner

20 min

Potato onion soup

Total time, start to plate · One pot · serves 4 · Kid-friendly

Onion softened, small potatoes simmered, a few mashed in to thicken the pot.

Ingredients

  • 2 potatoes
  • 2 onions
  • 4 cups water
  • 1 tsp salt
  • 1 tbsp oil

Steps

  1. Slice the onions and cook them slowly in oil until they soften and color, about 8 minutes.
  2. Add diced potatoes, water, and salt.
  3. Simmer until the potatoes break.
  4. Mash a few into the broth. Taste. Onion soup without salt is just hot onion water.

Keeps: Fridge for 4 days.

One-pan or sheet-pan option

30 min

Sheet-pan potatoes and onions

Total time, start to plate · One sheet pan · serves 4 · Kid-friendly

Wedges and onion petals roast until the onion sweetens and the potatoes crisp.

Ingredients

  • 1 lb potatoes
  • 2 onions
  • 1 tbsp oil
  • 1 tsp salt

Steps

  1. Heat the oven to 425°F. Cut the potatoes into wedges and the onions into petals.
  2. Toss with oil and salt. Spread them so the onions aren't buried.
  3. Roast about 20 minutes, until the potatoes are tender and the onions are brown.
  4. Taste an onion. It should be sweet. Add salt if it tastes only like steam.

Keeps: Fridge for 3 days.

The other dinner

25 min

Potato and onion hash

Total time, start to plate · One skillet · serves 4 · Kid-friendly

Potatoes and onions fried until sweet and brown, with an egg on top if you have one.

Ingredients

  • 1 lb potatoes
  • 1 onion
  • 1/2 tsp salt
  • 2 eggs

Steps

  1. Dice the potatoes small and slice the onion.
  2. Fry the potatoes in oil with salt until they have a crust. They take the longest.
  3. Add the onion and cook until it is soft and brown at the edges.
  4. Crack the eggs on top or scramble them through. Taste the potatoes. They need salt.

Keeps: Fridge for 3 days.

Make it with leftovers

Leftover roasted potatoes and softened onions crisp again in the hash. Raw potatoes need the sheet pan or the soup. Don't boil potatoes you already roasted. You'll wash off the flavor.

More dinners from leftovers

Pantry staples you'll need

  • Oil
  • Salt
  • Pepper
  • Eggs or beans

No onion: the potato still fries. See eggs and potatoes. No potatoes: onions and sausage is a different page. See sausage and peppers, which brings onion along.

When there is nothing in the fridge

Picky-eater and healthy tweaks

Well-browned potatoes with the onion picked to the side. Onion that is fully soft is less sharp than raw onion. An egg on the hash makes it look like a meal a kid recognizes.

Oil enough to brown, not to deep-fry. Leave the skin on. An egg or beans adds the protein this plate doesn't have by itself.

More dinners in under 30 minutes

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Related dinners

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Questions

What can I make with potatoes and onions in 20 minutes?

Potato onion soup takes 20 minutes, start to plate. Onion softened, small potatoes simmered, a few mashed in to thicken the pot.

What's the easiest dinner with potatoes and onions?

Potato and onion hash is the low-fuss one: one skillet, 25 minutes. Potatoes and onions fried until sweet and brown, with an egg on top if you have one.

Can I make this with leftover or cooked potatoes?

Leftover roasted potatoes and softened onions crisp again in the hash. Raw potatoes need the sheet pan or the soup. Don't boil potatoes you already roasted. You'll wash off the flavor.

What else can I add to potatoes and onions for a full meal?

The cards already use potatoes, onion, salt. A piece of fruit or a handful of frozen vegetables is enough if you want more on the plate. Don't make a second shopping trip.

Is potatoes and onions a healthy dinner?

Oil enough to brown, not to deep-fry. Leave the skin on. An egg or beans adds the protein this plate doesn't have by itself.

How do I make potatoes and onions kid-friendly?

Well-browned potatoes with the onion picked to the side. Onion that is fully soft is less sharp than raw onion. An egg on the hash makes it look like a meal a kid recognizes.

Can I make potatoes and onions in one pan or a sheet pan?

Sheet-pan potatoes and onions uses one sheet pan and takes 30 minutes. Wedges and onion petals roast until the onion sweetens and the potatoes crisp.

What if I don't have onions?

No onion: the potato still fries. See eggs and potatoes. No potatoes: onions and sausage is a different page. See sausage and peppers, which brings onion along.