Preheat oven to 400°, wash, then cut 2 peppers in half lengthwise + discard seeds; lay cut-side up in lightly oiled baking dish, season with salt/pep + bake 15-20 min until tender

Meanwhile, heat 1 tbsp oil in a skillet over medium; crumble tempe, add to skillet + sauté 5-7 min until browned + hot; dice onion, add to tempe + sauté 3-5 until softened; mix in ½ cup sauce + salt/pep

Remove peppers from oven, flip, fill with burger mix then top each half with 2 tbsp cheese; return to oven + bake 8-10 min until cheese is melted