Using a vegetable brush, firmly scrub the skins of the sweet potatoes.
Drizzle the sweet potatoes with olive oil and rub it all over using your hands. Season each potato with salt.
Poke holes in the sweet potatoes with a fork. This will help them release steam as they cook so they don't not explode in your oven. Don't skip this step!
In the oven. Place them on a baking sheet and bake them at 400ºF for 40 minutes or until tender enough to cut with a knife.
In the microwave. Depending on their size, times will vary so for a medium-sized sweet potato, start at 8-10 minutes on HIGH. If they're not yet tender, continue microwaving in 1 minute increments until tender enough to cut with a knife.
Once tender and cool enough to handle, slice each sweet potato lengthwise, down the middle, then push both ends towards the middle so they open up.
Using a fork, slightly mash the inside of the sweet potato then stuff with picadillo, maduros, and avocado. Top with your favorite toppings. Enjoy!