Ingredients

2½lbsYukon gold potatoes,(5 to 6 medium)

1tbspsalt,divided

4tbspunsalted butter,cut into slices

½cupmilk,or more as needed

1½cupsgrated sharp cheddar cheese

⅛tsppepper

2tbspolive oil

1medium onion,finely chopped

1large garlic clove,finely chopped

1tspdried oregano

½tspground cumin

15ozblack beans,(1 can), rinsed and drained

1cupfrozen corn

2cupscooked chicken,shredded

2cupssalsa,of choice

Preparation

Preheat the oven to 425 degrees F. Have on hand a 9×13-inch or 2-quart, shallow baking dish.

Wash and cut the potatoes into 1-inch chunks (peeling optional). Place them in a large pot. Fill the pot with cold water until there is about 1 inch of water above the potatoes.

Add 2 teaspoons of salt and taste; the water should taste briny. If it doesn’t, add a few more pinches of salt.

Bring to a boil over high heat. Reduce the heat to a simmer and cook the potatoes, uncovered, for 15 to 20 minutes, or until tender when pierced with the tip of a paring knife.

Drain in a colander and return the potatoes to the pot. Set the pot over low heat and stir the potato chunks for 1 to 2 minutes to dry them.

Add the butter to the pot of hot, drained potatoes (still over low heat) and mash well with a potato masher until the butter melts. There may be a few lumps.

Push the potatoes to one side of the pot to make space for the milk. Add the milk and heat it until hot (this only takes a few seconds.)

Use a sturdy whisk to stir in the milk, whisking until the potatoes are fluffy and adding more milk, 1 tablespoon at a time if the potatoes seem dry.

Stir in ½ cup of the cheese, ½ teaspoon salt, and ⅛ teaspoon pepper. Taste, and add more salt, if desired.

Meanwhile, make the filling. In a large skillet over medium heat, heat the oil. Add the onions and garlic and cook for 5 minutes, or until softened. If the onions are cooking too fast reduce the heat to medium-low.

Add the oregano and cumin, and cook for 30 seconds. Add the beans, corn, chicken, and salsa to the skillet. Stir in ½ teaspoon salt. Taste and add more salt, if desired.

Transfer the filling to the baking dish. Spread the mashed potatoes over the top and sprinkle with the remaining 1 cup cheese.

Bake for 25 to 30 minutes, or until the filling bubbles and the cheese is golden. Leftovers will keep in the fridge for up to 3 days.