Zapiekanki

1. Heat the oven to 200C/180C fan/gas 6. Bake the baguettes on a tray for 8 to 10 minutes, then leave to cool.
2. Melt 2 tsp of the butter with 1 tsp of the oil in a pan over a low heat and cook the chopped onion for 5 minutes until soft. Add the mushrooms, raise the heat to medium and cook for another 5 to 10 minutes, until the veg is soft and the mushroom liquid has cooked away. Stir in the garlic for a minute or two until softened. Season, stir in the mayonnaise, then take off the heat.
3. Halve the baguettes lengthways and lay them cut-side up on the tray. Spread over the mushroom mixture, then scatter on the cheddar, ham, kabanos and mozzarella. Bake for 8 to 10 minutes, until the cheese has melted and gone golden.
4. While they bake, heat the rest of the butter and oil in a pan over a medium heat and fry the sliced onions for 5 minutes until soft and golden, then set aside. Once the zapiekanki are out, top with the fried onions, dill pickles if using, chives and a zig-zag of ketchup.

Tips from the ZestyPlate Kitchen

• Give the baguette a quick bake first so it holds its crunch under the toppings.
• Cook the mushrooms until their liquid has gone, otherwise the bread turns soggy.
• Be generous with the cheese and bake until it bubbles and takes on some colour.
• Top with fried onions, a few pickles and the classic ketchup drizzle to finish.