Dice the onion. Express the buns well. Knead both with mince, ground meat, eggs, salt, pepper and paprika powder. Shape approx. 12 - 15 meatballs and fry in the pan in portions.
Place the meatballs on a baking tray, spread the pineapple and bacon slices on top. Top each meatball with Gouda cheese.
Fry in a preheated oven at 175 ° C for approx. 15-20 minutes.