I start by broiling halved tomatoes and red onion with a drizzle of olive oil until lightly charred. This roasting step brings out the natural sweetness and smoky flavor. After roasting, I blend them with cumin, cayenne, chili powder, half the garlic and onion powders, salt, and pepper to create a smooth, aromatic sauce. The sauce has a nice balance of smoky, sweet, and mildly spicy flavors that complement the peppers perfectly.
Next, I bring water or broth to a boil in a saucepan. Slowly whisk in the polenta to avoid lumps. I cook it until thickened, then stir in thawed corn, the remaining garlic and onion powder, salt, pepper, and half the scallions. The polenta becomes creamy and slightly firm, perfect for stuffing, while the corn adds a pop of sweetness and texture.
I preheat the oven to 400˚F. In a baking dish, I spread a layer of the tomato sauce, then place the pepper halves cut-side up. I lay a slice of pepper jack cheese inside each pepper and scoop polenta on top. The layering ensures every bite has sauce, cheese, and polenta.
I bake the stuffed peppers for 15–20 minutes until the tops are lightly golden and the peppers are tender. The sauce thickens as it bakes, coating the peppers and making them juicy and flavorful. I finish with a sprinkle of the remaining scallions for a fresh, vibrant touch.