Dinners

Hey i feel like my kids are eating the same 4 or 5 meals on repeat they're a healthy weight but they have allergies and are picky eaters the only way i get them to eat veggies atm is blending them into sauces, veggie fingers or veggie crisps they will not eat just normal veg as is or with sauces. I'm on my own and they're quite young, plus my youngest screams like he's being murdered when i leave the room so doing home cooked meals like shepherds pie is difficult. Has anyone got any suggestions for quick 1 pot meals or just dinners that are balanced but don't take an awful lot of prep. Current meals are usually something like chicken and veggie fingers or sausage and veggie fingers, sometimes pasta with a veggie sauce that I've made in a big batch and frozen for later, problem is i don't have an awful lot of freezer space and things like soups or saucy dinners usually end up everywhere except their faces. Allergies are milk, egg, ketchup and kiwi waiting for further allergy testing