3 tablespoons chopped fresh cilantro, plus more for garnish
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2 limes, divided
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1.5 pounds boneless, skinless chicken breasts, cut into strips
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0.5 onion, thinly sliced
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0.25 cup canned diced tomatoes, undrained
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6 tortilla shells
Instructions
Combine 3 tablespoons olive oil, garlic, cumin, coriander, cilantro, and juice of 1 lime in a gallon-sized resealable plastic bag. Add chicken and marinate for 30 minutes.
Turn on a multi-functional pressure cooker (such as Instant Pot) and select Saute function. Heat remaining 1 tablespoon olive oil. Add onion rings and cook until soft and translucent. Add diced tomatoes with liquid. Drain chicken from marinade and add to Instant Pot®. Close and lock the lid.
Select high pressure according to manufacturer's instructions; set timer for 10 minutes. Allow 10 to 15 minutes for pressure to build.
Release pressure using the natural-release method according to manufacturer's instructions, for 6 minutes. Release remaining pressure carefully using the quick-release method, about 5 minutes. Unlock and remove the lid. Remove chicken and shred with 2 forks. Return to the Instant Pot® and mix with tomato sauce.
Add chicken mixture to taco shells and add preferred toppings. Slice remaining lime and add lime slices to each taco plate.