Heat the oven to 180°C.
Cook the gluten-free pasta according to the packet instructions, then drain and set aside.
Heat the olive oil in a large pan and gently soften the onion and garlic.
Stir in the tuna and peas, then add the dairy-free cream and dairy-free cream cheese alternative.
Mix well and heat through gently.
Add the cooked pasta and stir until everything is evenly coated.
Transfer to an ovenproof dish and top with the dairy-free grated cheese.
Bake for 20–25 minutes until golden and bubbling.