Preheat the oven to 400 degrees Fahrenheit. This ensures the peppers will cook evenly.
Cut the tops off the bell peppers and scoop out the seeds. Stand them up in a baking dish so they can hold the filling.
Place the peppers in the oven (empty) for twenty minutes while you prepare the filling. This step softens them a bit, making them easy to eat.
While the peppers are softening in the oven, heat the olive oil in a large pan over medium-high heat. Once hot, add the red onion and sauté for a few minutes until it becomes translucent.
Add the ground turkey, garlic, chili powder, cumin, and salt to the pan. Sauté, stirring frequently, until the turkey is no longer pink. This should take about ten minutes. You want to ensure the turkey is fully cooked.
Next, add the diced tomatoes and cook for a few more minutes to blend the flavors together. The mixture should be aromatic and colorful.
Stir in the cooked brown rice until it’s evenly distributed in the filling. This adds texture and helps bind everything together.
Remove the peppers from the oven and spoon the turkey and rice mixture inside. Fill them generously until they’re packed to the top.
Return the stuffed peppers to the oven and cook for an additional 20 minutes. They should be soft and the flavors melded beautifully.
Finally, sprinkle cheddar cheese evenly on top of the peppers and return them to the oven once more for about 10 minutes. The cheese should be bubbly and golden.
If desired, tuck in some scallions into the peppers to look like handles on your Pot o Gold. Serve warm and enjoy the delightful mixture of flavors!