Preparation / Directions:
1. Heat coals or gas grill. Peel sweet potatoes; cut into 1/2-inch diagonal slices.
2. Heat 1 inch water to boiling in 3-quart saucepan. Add sweet potatoes. Cover and heat to boiling; reduce heat to low. Simmer about 12 minutes or until almost tender; drain. Mix margarine and salt.
3. Grill sweet potato slices uncovered 4 inches from medium heat about 20 minutes, brushing frequently with margarine mixture and turning once, until tender. Serve sweet potatoes with marinara sauce.