Preheat oven to 400 F. Wash and de-seed poblano peppers, then drizzle with olive oil and season with salt and pepper if desired. Add to a parchment-lined baking sheet and bake for 10 minutes.
Meanwhile, cook ground beef ove med-high heat until browned (about 5-7 min) then drain any excess fat. Add chili powder, cumin, paprika, salt, garlic, red pepper and red onion, sauteeing another 2 minutes until veggies are tender.
Stuff ground beef mixture into poblano peppers, then top with cheese. Bake another 10 minutes until cheese is melted.
Remove from oven and top with toppings of choice. Serve and enjoy!