01 -
Set your oven to 200°C. This temperature works perfectly for roasting the veggies while keeping their flavors intact.
02 -
Dice all the vegetables into pieces of roughly the same size so they cook evenly. Slice the red onion thinly and finely dice the garlic clove too, for extra flavor throughout the dish.
03 -
Pile your chopped veggies into a large baking dish, pour over half the olive oil, sprinkle on the thyme, and season with salt and pepper. Roast in the oven for about 15 minutes, or until the edges start to turn golden.
04 -
When the veggies come out of the oven, toss in the uncooked rice and break the tuna into chunks before mixing everything together gently. Evenly pour the heated broth over the whole mixture.
05 -
Pop the dish back into the oven for about 25 minutes. Halfway through, give everything a light stir to help the rice cook evenly. By the end, the rice should have soaked up most of the liquid.
06 -
Take the dish out and sprinkle a good amount of grated parmesan on top. Put it back in the oven for a final five minutes, just until the cheese melts and gets a little golden.