Wash and prepare broccoli and cut into small florets. Wash and prepare the peppers and cut into small pieces.
Bring the stock to the boil in a saucepan and pre-cook the vegetables for approx. 3 - 4 minutes. Then drain and let cool in a bowl.
In the meantime, roll out the puff pastry, cut into 4 equal pieces and brush with oil.
Mix the remaining ingredients for the filling with the vegetables well, season and spread on the 4 sheets of pastry. Leave an edge of 1cm free all around. Now carefully roll up the dough pieces from the narrow side and place the seam down on a baking sheet lined with baking paper. Brush the strudel with oil and bake in the preheated oven at 180 ° - 200 ° C for approx. 30 - 40 minutes.