1) Preheat oven to 350F and put water for linguine on to boil.

2) Heat 1 teaspoon oil in a 2-quart heavy saucepan over medium heat and add onion and green pepper. Cook until just tender.

3) Add garlic and red pepper flakes and continue to cook another 30 seconds.

4) Add tomatoes and 1/2 teaspoon salt and simmer, uncovered, stirring occasionally, until slightly thickened, 15 to 20 minutes.

5) Grill eggplant while sauce cooks.

6) Heat grill pan over high heat until hot. Peel skin from eggplant and discard.

7) Cut eggplant long-ways into 8 (1/3-inch-thick) slices. Lightly rush both sides of slices with 2 teaspoons oil (total), then season with salt and pepper. Grill slices in batches, turning over once l, until golden brown and tender, about 4 minutes, then transfer to a tray.

8) Stir together ricotta and 1/2 cup Parmesan, basil, pepper, and remaining salt. Divide cheese mixture among slices.

9) Roll up each slice.

10) Place rolls in a small casserole dish and bake until cheese starts to melt, about 10 minutes.

11) Meanwhile, cook linguine to package directions.

12) Serve rolls over linguine, topped with sauce and sprinkled with 1 tablespoon Parmesan each.