Keep the screen awake with cook mode on the Good Food app.
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Method
step 1
Preheat the oven to 200 degrees Celsius / 180 degrees fan / gas mark 6.
step 2
Line a baking tray with greaseproof paper. Heat a frying pan over a medium heat.
step 3
Add the shallots and asparagus tips to a bowl and toss in the oil and cook for 3 minutes in the pan until softening and browning. Remove the asparagus if it cooks quicker than the shallots.
step 4
Add the balsamic vinegar and allow it to bubble and coat the shallots and asparagus. Set aside to cool.
step 5
Unroll the pastry and put on the tray. Using a sharp knife, score a 2.5 cm border around the pastry edges and prick the middle with a fork several times.
step 6
Spoon the mixture on inside the border and top with the cheese.
step 7
Brush the edges with the egg and bake for 15-20 minutes.