Cheese-Topped Grilled Tomatoes

4 plum or small vine-ripe tomatoes, cut in half lenthwise
1/4 C. zesty Italian dressing
1/2 C. shredded Mozzarella cheese
2 Tbsp. grated Parmesan cheese
1 Tbsp. chopped fresh herbs (basil, chives, & parsley)

Preheat grill to medium-high heat. Place tomatoes cut side up, in an 8 in. square foil pan. Drizzle with dressing and sprinkle evenly with cheeses. Place pan on grate of grill and close lid. Grill 10-12 min. or until cheeses are melted and bottoms of tomatoes are browned. Sprinkle with herbs just before serving.