Creating Taco Stuffed Poblano Peppers is simple if you follow these steps:

1. Preheat the Oven: Start by preheating your oven to 375°F (190°C).
2. Prepare the Peppers: Cut the tops off the poblano peppers and remove the seeds. Place them in a baking dish.
3. Cook the Meat: In a large skillet, heat the olive oil over medium heat. Add the diced onion and minced garlic, sautéing until softened.
4. Add Ground Meat: Add the ground beef (or turkey) to the skillet. Cook until browned, breaking it apart with a spatula.
5. Season the Mixture: Stir in the taco seasoning, diced tomatoes, cooked black beans, and cooked rice. Cook for another 5 minutes, allowing the flavors to meld.
6. Stuff the Peppers: Carefully spoon the meat mixture into each poblano pepper, packing it tightly. Top each pepper with shredded cheese.
7. Bake: Cover the baking dish with foil and bake in the preheated oven for 25 minutes. Remove the foil and bake for an additional 10-15 minutes, or until the peppers are tender and the cheese is bubbly.
8. Garnish and Serve: Once baked, remove from the oven and let cool slightly. Garnish with fresh cilantro, if desired.

These steps will guide you effortlessly through the process of creating these incredible stuffed peppers.