Cherry Tomato and Champagne Grape Tart

Name: Cherry Tomato and Champagne Grape Tart
Ingredients: 6 tablespoons unsalted butter; 1 cup flour; 1 tablespoon olive oil (plus a bit more for brushing); 1 teaspoon minced fresh rosemary; 2 tablespoons shredded parmesan; ice water (3-4 tbs - it will depend); cherry tomatoes - I used red and gold - I can't say exactly how many as it depends on the size, but probably a cup and a half or so; champagne grapes - same deal as the tomatoes - maybe 1/2 cup?; 2 ounces fresh pecorino - the soft kind not the hard aged stuff; a pinch of salt or two