Oven Baked Cheese Hamburgers

Jo loves to help me make these hamburgers. The kids don't like the Shiso herb in the middle, so we make some without it too. The carrot makes the burger juicy and adds a sweet flavour. Cooking them in the oven on a drip tray makes cooking easier, allowing you to do it all in one quick batch, and also reduces the amount of fat used.
Ingredients:
1 onion, chopped
1 tsp garlic, minced
500g mince
1 carrot, grated
1/2 tsp nutmeg
1/2 tsp dried thyme
Salt and pepper
1 egg
6 leaves of Shiso herb, cut in half
12 cubes of cheddar cheese
olive oil
Fry onion and garlic in 1/2 tbsp oil. Cool. Grate carrot into a bowl and season, add thyme and mix. Add onion & garlic, mince, nutmeg and egg. Mix well until the mixture becomes pasty. Form into large balls, then toss from hand to hand to help keep the burgers tender. Poke your finger in the centre and press a shiso leaf and a cube of cheese in the middle, then cover up by closing the hole. Smooth surface and place on a grilling tray. Sprinkle with 1 tbsp olive oil and bake in the oven at 230 degree Celsius for 14 mins.