Instructions

• Remove husks from the 6 tomatillos, rinse if needed, trim off the stem ends, and finely chop to make about 2 cups; finely chop the 1 medium onion and set both aside.
• Place the 10 oz can Ro-Tel Diced Tomatoes and Green Chiles in a colander in the sink to drain while you chop the tomatillos and onion.
• Pour the drained Ro-Tel, the chopped tomatillos, chopped onion, 8 cups chicken stock, the 4 oz can diced green chiles (Anaheim), 1 tsp Mexican oregano, 1/2 tsp ground cumin, 1 tsp salt (or a little less to taste), and fresh-ground pepper to taste into the Instant Pot.
• Close and lock the Instant Pot lid and set the valve to SEALING. Cook on MANUAL / PRESSURE COOK, LOW PRESSURE for 20 minutes (or use the Soup setting according to your Instant Pot manual).
• While the Instant Pot comes to pressure and cooks, dice or shred cooked chicken breast until you have 4 cups and set aside.
• While the soup is cooking, break apart the frozen cauliflower rice package (one package, 10–12 oz) and place the cauliflower rice in a bowl to begin thawing.
• When the 20-minute pressure-cook time ends, perform a QUICK RELEASE of the pressure according to your Instant Pot instructions and open the lid carefully.
• Stir in the 4 cups diced cooked chicken and the thawed/broken-apart cauliflower rice into the soup.
• Set the Instant Pot to SAUTÉ on MEDIUM and simmer the soup uncovered for 15–20 minutes, stirring occasionally, until the soup has reduced slightly and flavors are combined. If it seems to be boiling too vigorously, lower the Saute temperature.
• While the soup is simmering, chop 1 cup fresh cilantro, cut the avocados into dice (2 avocados, optional), and cut limes for serving. (Toss avocado with a little lime juice if desired to slow browning.)
• After the 15–20 minute simmer, add the 1 tablespoon fresh-squeezed lime juice and the chopped cilantro to the soup and simmer uncovered 2–3 minutes more.
• Taste and adjust seasoning if needed. Serve the Chicken Tomatillo Soup hot, with diced avocado and additional lime pieces for squeezing at the table if desired.