Toast the bread. Meanwhile, peel the garlic clove. As each piece of toast is ready, rub it on one side with the garlic, then spread with a big spoonful of Greek yogurt and put onto plates.
Get a large frying pan over a super high heat and drizzle in a good glug of olive oil. Chuck in the cherry tomatoes and season with salt and black pepper. Fry for 2 minutes until the tomatoes just begin to burst. Stir in the harissa paste to taste, then remove from the heat.
Spoon the hot tomatoes over the cool yogurt toasts, making sure to spoon over all the flavoured oil from the pan too. Finely grate a little lemon zest over each plate of bruschetta and tear over a few basil leaves to finish.
SPEED HACK: Get everything ready with the toast and put on serving plates before you’ve even started frying the tomatoes.