One Pot Tuna Pasta

Name: One Pot Tuna Pasta
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Ingredients: Tinned Tuna: 180g; Onion: 1, large; Garlic: 2 cloves; Green Beans: 100g; Passatta: 500g; Low Salt Vegetable Stock Cube: 1; Dried Basil: 1/2 a tsp; Basil: A handful of leaves; Oregano: A few sprigs; Lemon Juice: 1 tsp; Olive Oil: Plenty; Rigatoni: 250g