Arrange a rack at center position and preheat oven to 375 degrees. Oil a shallow 2-quart baking dish and set aside.
Stem tomatoes, then halve horizontally. Squeeze halves lightly to extract juice, then scoop out seeds. Cut into 1-inch chunks and drain chunks in a colander for 20 minutes. (The amount of liquid that drains from the tomatoes will vary depending on the variety of tomato.)
Spread the tomato chunks in the baking dish. Add the basil, rosemary, salt and several grinds of black pepper, and toss.
Mix together the bread crumbs, Parmesan cheese and pine nuts in a large bowl. Add the butter and mix well with your hands until mixture is crumbly. Spread the mixture on top of the tomatoes.
Bake the tomato crumble until the topping is crisp and slightly browned and juices are bubbling, 30 to 35 minutes. Remove from the oven. Do not worry if there is liquid in the pan; you can spoon it out or leave as is. (The crumble can be prepared 3 hours ahead. Cool and leave at room temperature. Reheat in a preheated 350-degree oven until warm, about 15 minutes or longer.)
Garnish the center of the crumble with fresh basil and rosemary sprigs.