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!