This dish is one pot MAGIC.
Based on 4 servings, adjust as needed.
Set a wide saucepan or casserole dish over a medium heat. Add the olive oil and sliced garlic, and cook for 1 minute, until just golden. Add the spaghetti, halved cherry tomatoes, sliced onion, salt and boiling water.
Tip - You need to make sure the spaghetti is fully submerged in the water - if not, break it in half!
Bring to the boil and cook for 8-10 minutes, stirring occasionally. The dish is ready when the spaghetti is fully cooked and your sauce is ‘saucy’!
Stir the torn basil into your saucy spaghetti and divide between the bowls. Serve with grated parmesan.