Easy Coconut Chickpea Curry

coconut oil

large red onion (thinly sliced)

garlic (minced)

inch fresh ginger (peeled and pinced)

garam masala

ground turmeric

ground black pepper ((reduce to 1/8 tsp if freshly-ground))

cayenne pepper ((or to taste))

salt ((plus more to taste))

and 1/2 cups diced tomatoes ((equal to 1 14-oz. can; drain before using))

and 1/2 cups full-fat coconut milk ((equal to 1 14-oz. can))

and 3/4 cups cooked chickpeas ((equal to 1 16-oz. can; drain and rinse before using))

freshly-squeezed lime juice ((1 lime) (lemon also works))

chopped fresh cilantro (coriander) (for serving)