Grease the 2 mini muffin trays (24 trays each) well. Peel and finely chop the onion. Peel and finely chop the garlic. Heat the fat in a saucepan, add the onions, garlic and pine nuts and steam over a low heat for about 5 minutes. Remove from the stove and let it cool down a little
In the meantime grate the Parmesan finely. Wash parsley, shake dry and chop finely. Dice bread finely. Whisk eggs. Mix bread, eggs, parmesan and parsley in a large bowl. Add the pine nut fat mixture and mix well with your hands. Season with salt and pepper. Leave to stand for about 15 minutes.
Line 24 troughs of a mini muffin tray with one slice of bresaola each. Line the remaining 24 trays with a slice of pancetta. Carefully press the edge of the tray firmly with your hands
Squeeze the bread filling a little. Distribute evenly into the hollows. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for 17-20 minutes one sheet at a time. Remove from the oven and take out of the wells, arrange