Heat the oil in a large pot
Sauté the onions on medium heat
Add mince and garlic, and brown (if you are going to add seasoning, do so before the meat browns)
Mix in celery and cook for a few minutes, until celery starts to pale
Add the tomatoes and tomato paste (or passata), stir until well mixed
Add carrots and broccoli and bring the sauce to boil
Once boiling, lower the heat and simmer the sauce for approx 20-30 minutes, until it thickens
Prepare pasta as per the packet instructions
Mix pasta with sauce
Wait for it to cool, then mash or puree to desired consistency and freeze in 75ml portions
Add cheese, breastmilk or formula, capsicum or dried herbs when serving to change up the flavours