Preheat the oven to 200C

Wash and prepare the mushrooms and arrange on a suitable oven dish

Slice the halloumi into eight equal pieces, and arrange on a non-stick tray

Bake the mushrooms and halloumi for 15 minutes until cooked

Prepare the buns by splitting in half and spreading mayonnaise on each bit.

Slice the beetroot into thick pieces

Once the halloumi and mushrooms are cooked, layer up the stacks starting with the mixed leaves on the bottom, then the beetroot, halloumi and mushrooms.