Red Onion Pinwheels

1 puff pastry dough, 2 red onions, 100 gr bacon cut into small cubes, 250 gr chopped fresh spinach, 200 gr grated parmesan, 1 teaspoon sweet mustard, 1 teaspoon sweet chilli sauce, 1 beaten egg, some sesame seeds or black cumin seeds

Fry the chopped onions in oil, add the bacon and the spinach. Saute for a couple of minutes, add the mustard and the chilli sauce, season to taste.
Unroll dough on work surface. Spread spinach mixture on rectangle to within 1/2 inch of edges. Sprinkle with the parmesan cheese. 
Starting at long side of rectangle, roll up; seal long edge. With serrated knife, cut into 20 slices. Place cut side down on cookie sheet. Brush with egg. Sprinkle with the cumin seeds and put it in the oven for 15 minutes.
Serve while warm.