Zapiekanki

1. step 1
2. Heat the oven to 200C/180C fan/gas 6. Bake the baguettes on a baking tray for 8-10 mins, then leave to cool.
   8–10 minutes
3. step 2
4. Heat 2 tsp of the butter and 1 tsp of the oil in a pan over a low heat and cook the chopped onion for 5 mins until soft. Stir in the mushrooms, turn the heat to medium and cook for 5-10 mins more until the veg is soft and the mushroom liquid has evaporated. Stir in the garlic and cook for 1-2 mins until soft. Season, then stir in the mayonnaise and remove from the heat.
   5 minutes5–10 minutes1–2 minutes
5. step 3
6. Halve the baguettes lengthways, then return to the baking tray, cut-side up and spread over the mushroom mixture, then sprinkle over the cheddar, ham, kabanos and mozzarella. Bake for 8-10 mins, or until the cheese has melted and turned golden.
   8–10 minutes
7. step 4
8. Meanwhile, heat the remaining butter and oil in a pan over a medium heat and fry the sliced onions for 5 mins until golden and soft. Remove from the heat and set aside. Once the pizzas are cooked, top with the caramelised onions, dill pickles (if using), the chives and a zig-zag drizzle of ketchup.
   5 minutes

Cooking notes

When scaling protein-led dishes, weigh the meat rather than counting pieces, and remember that the pan size limits how much you can sear at once.

For volume-to-weight conversions of any ingredient — flour, sugar, butter, salts — use the ingredient converter. To translate the recipe's oven temperature between °C, °F and gas mark, see the temperature converter.

When you scale this recipe up or down, remember that cooking time does not scale linearly. A doubled cake takes longer, but not twice as long; a doubled soup takes roughly twice as long. The cooking-time guide gives sensible starting estimates by dish geometry.