Preheat your oven to 190°C (375°F). Slice the tops off the peppers and carefully scoop out the seeds and membranes, creating a hollow cavity for the filling.
Heat olive oil in a skillet over medium heat. Sauté chopped onion and minced garlic until fragrant and translucent, about 5 minutes, with a delightful aroma filling the kitchen.
Add the ground meat to the skillet, breaking it apart with a spoon, and cook until browned and cooked through, about 8 minutes. The meat should develop a rich aroma and start to brown nicely.
Stir in the cooked rice, chopped black olives, smoked paprika, salt, and pepper. Mix thoroughly until all ingredients are combined and heated through, about 2 minutes, letting the flavors meld.
Using a spoon, stuff each pepper with the savory filling, pressing down gently to pack it in. Place the stuffed peppers upright in a baking dish.
Sprinkle shredded cheese generously over the top of each stuffed pepper for that gooey, golden finish.
Bake the peppers in the preheated oven for 25-30 minutes, until the peppers are tender and the cheese is bubbly and slightly browned. The house will fill with smoky, cheesy goodness.
Remove from the oven and let the peppers rest for about 5 minutes, allowing the filling to set slightly and making them easier to serve.
Serve the Halloween stuffed peppers hot, with the smoky aroma inviting everyone to dig in and enjoy the flavorful, festive dish.