Make the sauce. Stir together the hot pepper jelly, orange juice, vinegar, a pinch of salt and a few grinds of pepper in a bowl or liquid measure. Stir and set aside.
Grill the cabbage. Preheat the grill to 350 degrees F.
Brush both sides of the cabbage with olive oil and sprinkle with salt and pepper. Place the slices over the direct heat of the grill and cook until the bottom is slightly charred, about 5 minutes. Flip the cabbage and brush with the pepper jelly sauce. Cook for another 4 to 5 minutes and remove to serving plates.
Top with the salad. Combine the apples, tomatoes, scallions, lemon juice and a drizzle of the sauce in a medium bowl (make it as saucy as you like). Toss to coat and place an equal amount of the salad on the center of each grilled cabbage slice. Top with a few basil leaves. Eat it!