Heirloom Tomato Gratin

I was looking at a friends copy of a Womens Day magazine and decided to post some recipes that sounded good here, so i don't lose them.

• Ready In: 1 hr 7 mins
• Serves: 10

Ingredients

• 1  garlic clove, cut in half
• 3  tablespoons extra virgin olive oil
• 1  large  vidalia onion, chopped
• 1⁄2 teaspoon orange zest
• 2  teaspoons honey
• 1  tablespoon fresh thyme, chopped
• 4  lbs  mixed  heirloom tomatoes, thickly sliced
•  salt & pepper
• 2  cups  fresh breadcrumbs
• 1⁄4 cup  grated pecorino romano cheese

Directions

1. Heat oven to 425F, you'll need a shallow 2 quart baking or gratin dish.
2. Vigorously rub the side of the baking dish w/ garlic, discard. brush dish with 1 Tbsp oil to coat.
3. Heat1 1/2 Tbsp oil in large skillet over medium, heat. Add onion and cook 15 minutes, stirring often, just until translucent and tender, but not browned. Remove from heat, stir in orange juice, honey and 1 1/2 tsp fresh thyme.
4. Scatter half over the bottom of the gratin dish, top with half the tomatoes and season with half of the salt and pepper. Top with remaining onion mixture salt & pepper and tomatoes.
5. Mix bread crumbs. cheese. and remaining oil and thyme until crumbs are evenly moistened, sprinkle over tomatoes.
6. Bake 20-24 minutes until crumbs are golden and juices bubble. Serve warm or cold.