Preheat your oven to 200°C (392°F). Place the whole peppers on a baking sheet and roast for about 10 minutes, turning occasionally until the skins are slightly blistered and fragrant. Remove and set aside to cool slightly.
While the peppers are cooling, heat a tablespoon of olive oil in a skillet over medium heat. Sauté chopped onion and minced garlic until translucent and fragrant, about 5 minutes. You'll notice the onions turning golden and the garlic releasing a warm aroma.
Add the cooked grains to the skillet with the sautéed aromatics. Stir well to combine, allowing the grains to absorb the flavors and heat through. This step creates a chewy, flavorful stuffing that’s ready to be seasoned.
Remove the roasted peppers from the oven and carefully cut off the tops with a sharp knife. Gently remove the seeds and membranes, creating a hollow cavity for the filling. Be gentle to keep the peppers intact but ensure they are clean inside.
Mix chopped fresh herbs and a squeeze of lemon juice into the grain mixture. Season generously with salt and pepper, tasting and adjusting until the flavor feels bright and balanced. The herbs add a fresh, vibrant note that complements the roasted peppers.
Stuff each pepper with the herbaceous grain mixture, pressing down gently to pack the filling inside. Fill to the top for a hearty presentation.
If desired, sprinkle nutritional yeast or vegan cheese over the top of each stuffed pepper for an extra cheesy, savory touch. This adds a golden, bubbly finish after baking.
Arrange the stuffed peppers upright in a baking dish. Cover loosely with foil and bake for 20-25 minutes, until the peppers are tender and the filling is heated through. You'll notice the peppers slightly puffing and the tops browning a little.
After baking, remove the foil and let the peppers rest for 5 minutes. This allows the flavors to settle and makes handling easier. The peppers should look vibrant and slightly caramelized on top.
Serve the stuffed peppers warm, garnished with additional herbs if desired. Enjoy the colorful, flavorful dish that combines tender peppers with a hearty, herby filling.