Begin by preheating your oven to 375°F (190°C) so it's ready for roasting.
Carefully slice the tops off each bell pepper and remove the seeds and membranes, creating a hollow space for the filling. Stand the peppers upright in a suitable baking dish.
In a large mixing bowl, thoroughly mix together the crumbled feta cheese, cooked quinoa, halved cherry tomatoes, finely chopped red onion, minced garlic, dried oregano, paprika, olive oil, and a generous pinch of salt and pepper. Ensure all ingredients are evenly combined for consistent flavor in every bite.
Using a spoon, carefully fill each bell pepper with the feta and quinoa mixture, pressing down gently to pack the filling tightly for a satisfying texture.
Drizzle a small amount of olive oil over the top of each stuffed pepper to enhance flavor and prevent drying during baking.
Cover the baking dish with aluminum foil to trap moisture, and place it in the preheated oven. Bake for 25 minutes to allow the peppers to soften.
After 25 minutes, remove the foil from the dish, and continue baking for an additional 15 minutes or until the peppers are tender and the tops are nicely charred, creating a delightful finish.
Once baked, remove the dish from the oven and let it cool for a few minutes to make handling easier. Before serving, garnish each stuffed pepper with fresh basil leaves for a burst of color and aroma.
Notes
Serve warm as a main course or side dish, and pair with a simple green salad.