Step 1

Set a 6- or 8-quart Instant Pot® to high saute (see Cook's Note) and allow it to heat up for 3 to 4 minutes. Add the canola oil to the pot, then add the onion, garlic and 1 teaspoon salt; cook until the onion is tender, stirring frequently, 6 to 8 minutes. Turn off the Instant Pot and stir in the ancho chili powder and a splash of the chicken broth and cook in the residual heat for 1 minute, stirring constantly and scraping up any browned bits from the bottom of the pot with a wooden spoon or heatproof silicone spatula.

Step 2

Add the chipotle in adobo, chicken thighs, black beans, tomatoes, remaining chicken broth and 1 teaspoon salt to the pot. Follow the manufacturer's guide for locking the lid and preparing to cook. Set to pressure-cook on high for 10 minutes. After the pressure-cook cycle is complete, follow the manufacturer's guide for natural release. After 5 minutes, being careful of any remaining steam, unlock and remove the lid.

Step 3

Remove the chicken thighs from the pot and transfer to a bowl. Stir the corn into the hot soup. Shred the chicken meat with 2 forks, then put it back in the soup. Season with more salt if needed.

Step 4

Ladle into soup bowls and serve with desired toppings.