Clean the peppers and carrots. Wash and finely dice the peppers. Finely dice the carrots. Heat the oil in a pan and fry the minced meat. Stir in tomato paste, sweat briefly and deglaze with barbecue sauce.
Cover and simmer for about 5 minutes. Add the vegetables and continue to cook covered over a low heat for about 5 minutes. Season to taste with salt and pepper.
Drain the mozzarella and cut into slices. Grate the gouda finely. Remove the croissant dough from the package, unroll it and place it on baking paper with the pointed side facing inwards overlapping to form a ring (approx. 26 cm Ø).
Place cooked ham in the middle of the ring of dough, sprinkle about 2/3 of the Gouda on top and spread the mince on top. Cover with a layer of salami and mozzarella.
Fold the inner tips and outer edge of the croissant dough towards the middle to form a closed ring. Press on lightly. Spread with egg yolk and sprinkle with the rest of the Gouda.
Bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 15 minutes until golden brown. Wash parsley, shake dry and chop. Remove the crispy ring from the oven, sprinkle with parsley and garnish with oregano if desired.