Let’s get started on creating these flavorful Mexican Street Corn Brussels Sprouts! Follow these steps for a delightful dish:

1. Preheat Oven: Preheat your oven to 425°F (220°C), ensuring it’s hot for roasting.
2. Prepare Brussels Sprouts: Trim and halve the Brussels sprouts, placing them in a large mixing bowl.
3. Season the Sprouts: Drizzle olive oil over the sprouts and sprinkle with chili powder, cumin, salt, and pepper. Toss until they are evenly coated.
4. Roast: Spread the seasoned Brussels sprouts on a baking sheet in a single layer. Roast in the preheated oven for 20-25 minutes, or until they are golden brown and crispy. Stir halfway to ensure even cooking.
5. Make the Dressing: While the sprouts are roasting, in a small bowl, whisk together mayonnaise, sour cream, lime juice, and half of the cilantro.
6. Add Cheese: Once the Brussels sprouts are done, remove them from the oven and immediately sprinkle with crumbled cotija cheese.
7. Top with Sauce: Drizzle the prepared dressing over the hot Brussels sprouts and gently toss to combine.
8. Garnish: Finish with the remaining cilantro and sprinkle with tajín seasoning for an extra kick, if desired.
9. Serve: Serve warm with lime wedges on the side for squeezing over the top.

These steps will guide you to create a remarkable dish that features an explosion of flavors and textures!