Cook the base grain. Prepare brown rice, quinoa, or cauliflower rice according to package instructions.
Fluff and set aside. For extra flavor, stir in a squeeze of lime and a pinch of salt while it’s warm.
Roast the veggies. Preheat oven to 425°F (220°C). Toss sliced bell peppers, red onion, and corn with 1–2 tablespoons olive oil, 1 teaspoon chili powder, 1/2 teaspoon smoked paprika, salt, and pepper.
Spread on a sheet pan and roast 15–20 minutes, stirring once, until tender and lightly charred.
Mix the spice blend. In a small bowl, combine 2 teaspoons chili powder, 1 teaspoon cumin, 1 teaspoon smoked paprika, 1/2 teaspoon garlic powder, 1/2 teaspoon onion powder, 1 teaspoon kosher salt, and 1/4 teaspoon black pepper. Adjust heat by adding cayenne if you like it spicy.
Brown the beef. Heat a large skillet over medium-high. Add a drizzle of oil, then the ground beef.
Break it up with a spatula and cook until no longer pink, about 5–7 minutes. Drain excess fat if needed.
Season the beef. Sprinkle the spice blend over the beef. Stir to coat.
Add a splash of water (2–3 tablespoons) to help the spices bloom and form a light sauce. Simmer 1–2 minutes, then squeeze in half a lime. Taste and adjust salt.
Warm the beans. In a small pot or the microwave, heat the black beans with a pinch of salt and a splash of water until warmed through.
Drain if watery.
Make the creamy sauce. Stir together Greek yogurt, mayo, lime juice, honey, hot sauce or chipotle, and a pinch of salt. Thin with a teaspoon of water if needed. It should be drizzle-able, tangy, and lightly smoky.
Prep the fresh toppings. Halve the cherry tomatoes, dice the avocado, and chop the cilantro.
Zest one lime and cut into wedges.
Assemble the bowls. Add a scoop of grains to each bowl. Top with seasoned beef, roasted veggies, black beans, corn (if you didn’t roast it), tomatoes, and avocado. Drizzle with the creamy sauce, sprinkle with cilantro and lime zest, and finish with a squeeze of lime.
Optional extras. Add shredded cheese, pickled jalapeños, green onions, or a few dashes of hot sauce for more kick.