Mix ingredients for the crêpes together and fry 1 ladle of batter at a time in a skillet.
For the mince mixture, fry all ingredients except the mince in a pan until the vegetables are cooked through.
Add the mince and continue to fry for 5-10 min on low heat.
For the sauce, melt margarine in a pot.
Sprinkle in the flour and sweat on low heat for 1 - 2 minutes, stirring well. The flour should not brown.
Remove from heat and gradually add the milk to the roux, stirring repeatedly until smooth to avoid any lumps.
Slowly bring to a boil and continue to cook, stirring constantly, until the sauce thickens.
Add ketchup, vinegar, salt & pepper. Add a little milk if necessary if too thick.
Continue to cook on lowest heat for 2 - 3 minutes.
Fill crêpes like burritos, roll up and place in a baking dish.
Pour the sauce over them and bake for 10 min in the oven at 180 degrees convection. Enjoy!