PREHEAT oven to 400°F.
RINSE sweet potatoes and pat dry. Wrap in aluminum foil and place on a baking sheet in the oven until very soft, about 40 minutes.
HEAT a skillet to medium-low heat. Add the ground beef and break up with a wooden spoon.
ADD all of the spices and continue cooking with the beef until it is completely cooked through, about 12-15 minutes.
TURN the heat off and carefully drain the excess grease.
WHEN the sweet potatoes are done baking, remove from the oven and carefully unwrap.
MAKE a slit in the middle of each sweet potato and fill it with the spiced ground beef mixture, storing any extra ground beef in the fridge for up to 3 days.
GARNISH with cherry tomatoes, avocado, fresh cilantro, and sliced green onion.
STORE any leftovers in the fridge for up to 3 days.