Place the puff pastry slices next to each other and let them thaw for about 10 minutes. Leave the bacon in a pan without fat until crispy. Clean and wash spring onions and cut into fine rings. Knead cream cheese and blue cheese with a fork, stir in spring onions and bacon and season with pepper.
Whisk eggs and cream. Spread the cheese mixture on one half of each puff pastry slice. Spread the edges with the egg mixture. Fold the other half over the filling. Press the edges together with a fork.
Place on a baking tray lined with baking paper. Spread with the remaining egg mixture. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for 15-20 minutes.
It goes well with ketchup.