Grilled Cheese and Tomato Stacks 1 teaspoon extra-virgin olive oil 1 teaspoon finely chopped fresh mint 1/2 pound Halloumi cheese,* cut into 1/4-inch-thick slices 8 mini pitas 2 ripe medium tomatoes, cored, halved, cut into 1/4-inch-thick slices Whisk 1 teaspoon oil, mint, and pinch of salt in medium bowl to blend. Add cheese and tomato slicesMarinate at room temperature at least 30 minutes and up to 2 days ahead. Keep covered in refrigerator Heat grill or grill pan to medium