Tomato, zucchini and capsicum gratin

Ingredients (4 servings): Olive oil cooking spray 125g feta cheese, crumbled 2 tablespoons oregano leaves, chopped ½ cup fresh multigrain breadcrumbs 1 teaspoon olive oil 6 tomatoes, cut into 5mm-thick slices 2 zucchini (baby marrow), trimmed, thinly sliced diagonally 1 red capsicum (bell pepper), halved, deseeded, thinly sliced   Method: Preheat oven to 200°C. Lightly…