Preheat your oven to 400°F (200°C). While the oven heats, take each sweet potato and use a fork to pierce it all over—about 1 inch apart, going completely through the skin. This prevents them from exploding in the oven and helps steam escape evenly. You're not trying to mash them; just poke holes deep enough that you feel the fork go all the way in. Line a baking sheet with parchment paper (this prevents sticking and makes cleanup painless—one of my non-negotiable kitchen investments). Place your pierced sweet potatoes on the sheet. Drizzle 1 teaspoon of olive oil into your palm and rub it lightly over each potato, coating all sides. You want just enough oil that they look slightly glossy, not shiny like they've been deep-fried. This helps them brown beautifully.

Slide the baking sheet into your preheated oven. Set a timer for 40 to 50 minutes. Don't just set it and forget—at the 40-minute mark, take one potato out and pierce it with a fork in the thickest part. The fork should slide through with almost no resistance, like piercing soft butter. If you feel any firmness, give them another 5 to 10 minutes. You'll know they're done when the skin has darkened slightly and the flesh inside gives completely to the fork. The skin might even split slightly at the top—that's perfect. This is what properly roasted sweet potatoes look like: caramelized, slightly wrinkled, and completely tender. They should smell almost candy-like, with deep roasted sweetness underneath.

While your sweet potatoes are roasting, make the filling. In a medium bowl, combine your drained and rinsed black beans, the halved cherry tomatoes, corn kernels, diced red onion, minced garlic, and chopped cilantro. Toss everything together gently—you're mixing, not aggressively stirring. Now dress the mixture: drizzle with the remaining 2 teaspoons of olive oil and the lime juice. Sprinkle with sea salt, a small pinch of black pepper, and a tiny pinch of chili flakes if you're using them. Toss gently until everything is coated and flavors are beginning to blend. The lime juice will brighten the tomatoes and cilantro; you'll notice the smell shift toward something fresher and more alive. Here's a professional tip: This mixture can sit for up to 30 minutes before serving, and it actually gets better as it sits—the flavors continue mingling and developing. If you're prepping ahead, this is your make-ahead champion.

While the potatoes finish cooking, halve your avocado lengthwise, remove the pit, and scoop the flesh into a small bowl. Using a fork, mash it until you reach your desired consistency—I like mine slightly chunky with some creamy parts, but that's personal preference. Immediately add 2 teaspoons of lime juice and a pinch of sea salt, then mix gently. The lime juice serves two purposes: it prevents the avocado from browning quickly, and it adds bright acidity that balances the richness of the avocado. If you're making this more than 30 minutes ahead, press plastic wrap directly onto the guacamole surface to minimize air exposure.

In another small bowl, combine your coconut yogurt (or dairy yogurt alternative), the remaining ½ teaspoon of lime juice, and a tiny pinch of sea salt. Whisk together until smooth. This becomes your cooling, tangy drizzle—it balances the earthiness of the beans and the richness of the avocado. The lime juice cuts through any heaviness and adds brightness. This yogurt mixture can also be made ahead and refrigerated for up to 3 days. It's one of those versatile components that works on grain bowls, roasted vegetables, or even as a dip for raw vegetables.

Once your sweet potatoes are perfectly tender, remove them from the oven and let them cool for 2 to 3 minutes (they'll be very hot). Slice each potato in half lengthwise, creating two long, flat surfaces. Using a fork or spoon, gently fluff the flesh inside without tearing the skin—you want the inside to be light and fluffy, almost like you've loosened it up for the toppings. Spoon your seasoned black bean mixture generously into each sweet potato half. Top each one with a generous dollop of your mashed avocado. Finally, drizzle with the yogurt mixture. You can also sprinkle a tiny bit of extra cilantro on top if you like, or a few extra lime wedges for someone to squeeze fresh juice over everything. Serve immediately while the sweet potatoes are still warm and the guacamole is fresh. The contrast between the warm potato, the cool avocado, and the tangy yogurt is part of what makes this dish feel so complete.