Cast Iron Potatoes and Onions with Crispy Bacon

mediumFrench bistro
Cast Iron Potatoes and Onions with Crispy Bacon

Rustic skillet dish of fingerling potatoes and red onions cooked until deeply browned, layered with crispy bacon lardons and fresh herbs. The potatoes develop caramelized edges while onions turn sweet and translucent, finished with scallions, parsley, and chives for brightness and color.

Ingredients

  • ½ lb slab bacon, pancetta or guanciale, cut into lardons
    prosciutto1:1pork belly alternative

    4

  • 2 lbs small new potatoes or fingerlings, cut into 1-inch chunks
    russet potatoes1:1.2increases cook time

    starchy option

  • 1 whole large red onion, peeled, sliced lengthwise in half then crosswise into thin half moons
  • 3 sprigs fresh thyme
    dried thyme1:3lower intensity

    convenience

    Full guide →
  • 4 whole scallions or green onions, peeled, sliced crosswise into half-inch rounds
    white onion1:0.5substitute onion

    texture change

  • fresh parsley, chopped
    dried parsley1:3lower freshness

    convenience

    Full guide →
  • fresh chives, chopped
    dried chives1:3lower intensity

    convenience

    Full guide →
  • olive oil, splash
  • salt
  • pepper

Instructions

  1. 1

    Cut bacon into lardons about 1 inch long and 1/2 inch wide.

  2. 2

    In a cast iron pan, brown the lardons on a low flame with a splash of olive oil.

  3. 3

    Remove browned lardons with a slotted spoon and reserve.

  4. 4

    Cut potatoes into 1-inch chunks (they need not be regular).

  5. 5

    Add potatoes to the pan, season with salt and pepper, and add thyme sprigs.

  6. 6

    Cook potatoes on medium-low flame, turning frequently for 10 to 15 minutes until nicely browned on all sides.

  7. 7

    Remove potatoes to a bowl.

  8. 8

    Peel onion, slice lengthwise in half, then slice crosswise into thin half moons.

  9. 9

    Add onions to the pan and salt.

  10. 10

    Cover and cook on low flame until onions soften and become translucent.

  11. 11

    Remove lid and continue cooking, stirring frequently, until onions are browned to your liking.

  12. 12

    Add potatoes and lardons back to pan and cook together for 1 to 2 minutes to warm.

  13. 13

    Peel and slice scallions crosswise into half-inch rounds.

  14. 14

    Stir scallions into potatoes.

  15. 15

    Scatter chopped parsley and chives on top and serve.

Tips

Tip 1

Use a heavy cast iron pan for even heat distribution and proper browning.

Tip 2

Do not overcrowd the pan when browning potatoes to ensure all sides make contact with the heat.

Tip 3

Turn potatoes frequently to achieve even caramelization on all sides.

Tip 4

Cover the pan when cooking onions initially to steam them slightly, which speeds softening.

Good to Know

Storage

Cover and refrigerate up to 3 days. Reheat gently in a skillet over medium-low heat.

Make Ahead

Prepare lardons, cut potatoes and onion up to 4 hours ahead. Store separately covered.

Serve With

Serve warm as a side dish to roasted meats or poultry.

Common Mistakes

Watch

Do not skip turning potatoes frequently to avoid uneven browning and undercooked centers.

Watch

Do not cook onions on high heat to avoid burning before they soften.

Watch

Do not skip the initial browning of lardons to avoid missing the essential smoky flavor.

Watch

Do not overcook the final warming step to avoid making potatoes mushy.

Substitutions

slab bacon, pancetta or guanciale
prosciutto1:1pork belly alternative

4

Full guide →
small new potatoes or fingerlings
russet potatoes1:1.2increases cook time

starchy option

Full guide →
fresh thyme
dried thyme1:3lower intensity

convenience

Full guide →
fresh parsley
dried parsley1:3lower freshness

convenience

Full guide →
fresh chives
dried chives1:3lower intensity

convenience

Full guide →
scallions or spring onions
white onion1:0.5substitute onion

texture change

Full guide →
Find more substitutions →