Line the baking dish (Ø 22 cm / 9 inch) with baking paper. Carefully unroll the pastry onto a baking paper. Pour the tomato passata into a small bowl and season to taste with salt and pepper.
preheat the oven
Spread the tomato sauce over the pastry almost to the edge. Preheat the oven to 220 °C / 430 °F.
Scatter the pastry with cheese, spicy sausage and sliced onion. Place in the oven and bake for 10 minutes at 220 °C / 430 °F or until the pastry is crisp and cheese is melted and delicious.
Scatter the baked tart with sweet corn, sliced tomatoes, sliced jalapeño. Serve with oregano and sour cream, enjoy.