-
1
Adjust one oven rack to middle position and a second rack 6 inches from broiler element and heat oven to 425°F Grate Parmesan (1 1/2 cups). Mince shallots. Mince 3 garlic cloves. Combine orzo, oregano, pepper flakes, 1/2 cup grated Parmesan, shallots, minced garlic and 1/4 teaspoon salt in bowl. Spread mixture evenly into broiler-safe 13-by-9-inch baking dish.
-
2
Slice zucchini and squash 1/4 inch thick. Core tomatoes and slice 1/4 inch thick. Alternately shingle zucchini, squash and tomatoes in tidy rows on top of orzo.
-
3
Carefully pour broth over top of vegetables. Bake on lower rack until orzo is just tender and most of broth is absorbed, about 20 minutes. Meanwhile, slice four 3/4-inch-thick slices of bread and spread out evenly over rimmed baking sheet; set aside.
-
4
Remove dish from oven and heat broiler. Drizzle vegetables with 1 tablespoon oil, and sprinkle with remaining 1 cup Parmesan. Broil on lower rack until nicely browned and bubbling around edges, about 5 minutes. Remove dish from oven and let rest for 10 minutes.
-
5
While tian rests, broil bread on upper rack, flipping as needed, until well toasted on both sides, about 4 minutes. Peel remaining 1 garlic clove and rub one side of each toast with garlic, then drizzle toasts with remaining 1 tablespoon oil and season with salt and pepper to taste.
-
6
Chop 2 tablespoons basil and sprinkle over tian. Serve with toasts.
