Heat a drizzle of oil in a non-stick frying pan. Add the bacon lardons and fry on a medium heat for 5 minutes until crisp and golden brown.
Add the shallots to the pan and fry for 3 minutes until soft.
Set aside to cool.
Add the Philadelphia to a mixing bowl with the grated cheese, chives, chopped jalapenos, jalapeno vinegar with the cooled bacon and shallots. Season with salt and pepper and give it a good stir until all of the ingredients are combined.
Unroll the sheets of pastry. Cut out 4 circles 10cm wide and 4 circles 11cm wide.
Add around 3 dessert spoons of the filling onto the smaller pastry circles. Leave a 1-2 cm gap around the edge and gently press it down.
Heat the oven to 190C fan / 375F / Gas Mark 5.
Lay the larger circles of pastry over the filling and press the edges very firmly together.
Use the prongs of a fork to make indents around the edge. Trim to neaten.
Brush with beaten egg. Use the back of a dinner knife to make faint lines from the centre to the outside edge.
Bake in the oven for 20-25 minutes until golden brown and cooked through
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