Preheat and prep: Set the oven to 425°F (220°C). Line a sheet pan with parchment for easy cleanup.
Peel and cube the sweet potatoes into 1-inch pieces for even roasting.
Season the potatoes: Toss sweet potatoes with 1 tablespoon olive oil, 1/2 teaspoon salt, 1/4 teaspoon pepper, and half the smoked paprika. Spread in a single layer on the sheet pan.
Roast until caramelized: Bake for 25–30 minutes, flipping once halfway. They’re done when edges are browned and centers are tender.
Sauté the veggies: Heat 1 tablespoon olive oil in a large skillet over medium heat.
Add sliced red onion and bell pepper with a pinch of salt. Cook 5–7 minutes until softened with light color.
Add garlic and greens: Stir in minced garlic for 30 seconds, then add chopped kale or spinach. Cook just until wilted, then transfer veggies to a bowl.
Cook the beef: In the same skillet, add ground beef.
Break it up with a spatula and cook over medium-high heat until no longer pink, about 6–8 minutes. Drain excess fat if needed.
Season the beef: Stir in cumin, chili powder, remaining smoked paprika, oregano, 1/2 teaspoon salt, and 1/4 teaspoon pepper. Cook 1–2 minutes more to bloom the spices.
Taste and adjust salt.
Optional grains: If using cooked quinoa or rice, warm it and season with a squeeze of lime and a pinch of salt for extra flavor.
Assemble the bowls: Divide roasted sweet potatoes, sautéed veggies, and seasoned beef among 4 meal prep containers. Add grains or beans if using.
Finish with toppings: Let bowls cool slightly, then add chopped cilantro. Pack lime wedges and hot sauce on the side.
Add Greek yogurt or avocado right before eating.