Start by making your pickle, by thinly slicing a red onion and placing into a bowl or jar.
Add a pinch of salt and squeeze over the juice of the lime.
Toss everything together so that the lime coats the onion and set aside to pickle.
Next make the chilli, layer the tinned tomatoes, onion, garlic, chipotle paste, taco seasoning, lentils, sweet potato and vegetable stock into the inner pot. Do not stir.
Place a long legged trivet into the instant pot.
Add the rice, water and salt into a suitable bowl, and place on top of the trivet.
Pressure Cook on High for 5 Minutes. When the time is up, allow for 8 Minutes natural release, then carefully quick-release the rest of the pressure.
Open the lid and take the rice out.
Fluff the rice with a fork.
Remove the trivet, then pour the rinsed and drained beans into the chilli, and give everything a good stir.
Season the chilli to taste with salt and pepper.
Plate up the chilli, on top of the rice and garnish with pickled red onions.