Southwestern Stuffed Sweet Potatoes with Avocado Sauce

avocado, roughly chopped

cilantro leaves and stems, roughly chopped and packed

lime juice (~2 limes)

large garlic clove

cumin

cold water

salt, plus more to taste

ground black pepper,

medium sweet potatoes

cumin

smoked paprika

salt (omit or reduce if your beans or corn are salted)

cooked black beans

cooked corn kernels (~1 corn cob)

grape tomatoes, thinly sliced