Vegan Asparagus Tart

Ingredients

• 1/2 medium onion – finely chopped
• 2 cloves garlic – finely grated
• one teaspoon chopped fresh oregano
• one teaspoon dried oregano
• 200g fresh tomatoes - chopped
• 6 large kalamata olives - finely chopped
• 1/2 pint of veg stock
• 1 tablespoon balsamic vinegar
• 1 teaspoon tomato puree
• a dash of white wine
• salt and pepper
• a pinch of sugar
• 1 sheet of vegan ready rolled puff pastry
• 1 bunch of fresh British asparagus
• A few tablespoons slow-cooked tomato sauce
• Fresh thyme