In a 4 quart dutch oven or other large pot, add avocado oil and turn a burner to medium heat. If you have not prepared the rice yet, prepare the rice per the package directions or see below for instant pot basmati rice option.
Once heated add the cumin seeds and sauté until they crackle. Add the red onion and sauté about 5 minutes, then add garlic, ginger and serrano/jalapeño. Sauté an additional 1 minute, then add the spices (curry, turmeric, cumin, coriander, garam masala, salt and pepper). Saute for one to two minutes.
Add potatoes ,can of diced tomatoes, and 2 ½ cups of water. Turn up the heat until bubbling and give it a good stir. Then turn the heat down to medium heat and cover for 10 minutes.
After 10 minutes, remove lid and stir. Add the bag of frozen peas and continue to cook until the potatoes are tender, stirring as needed. This can take 10-15 minutes depending on the size of your potatoes. You may need to add a little more water if it cooks down too much.
Serve with prepared basmati rice. Garnish with cilantro and greens if desired.
Leftovers will keep for up to five days in a covered container in the fridge.