I think the secret is to cook a proper meal every other night. Freezer food inbetween. And little healthy additions to the meals they already like.
Batch cook too. Which is cook a proper meal. And double/triple/quadruple the recipe. Then you portion it out and freeze it.
For example. I cook spaghetti bolognaise once a month Eat it that night. And then freeze pots/Tupperware/bags of it in the freezer. Then all you do is take it out of the freezer the night before you want it. And leave it on the side to defrost. Then just heat it up in microwave until really really hot. Then just boil spaghetti. Grate cheese. Make a little salad or crudités for the side. Boom
How about a mild curry? Again, make it. Then freezer portions for next week.
Mine like chicken drumsticks Just cheap Asda fresh chicken drumsticks. Bung them on baking tray Oven bake for 35 mins. Then boil corn on the cob. Baked beans maybe. Boom.
Jacket potatoes? Tuna mayonnaise and salad. Or baked beans and grated cheese.
Pesto pasta. I boil fusilli pasta. Drain. Then stir in pesto sauce from jar. Then finely grate courgette in and cheese. Boom (who could peel off the green bit of the courgette to hide the green)
Homemade potato wedges. Cut them into wedges. Then spray with oil and bung in oven for 30 mins ish. Serve with fried egg and baked beans.
Always have sweet corn and peas in the freezer. If I do fish fingers and chips. I serve with peas or sweet corn or both. Mine get a couple more chips if they finish their peas and sweet corn .
Tinned fruit and icecream
Jelly
Yogurts
I think of the food groups when I feed my 4. Protein. Carbs. 5 a day.
Could your 5 year olds have cooked lunch at school? That would take pressure off maybe
I think you just have to go for it love. I learnt myself and I’ve burned and still burn food on a regular basis. You just get better at it. I promise.
I’m not adventurous with my family of 6. And we have freezer food 2-3 times a week. But it’s just a balance really.