Snack monster

What do you feed your little ones to fill them up and keep them satisfied? My daughter is always asking for snacks and “something nice” (thanks for that one Grandma!). She’s quite fussy as are a lot at this age, I’m sure, but it makes it difficult to know she’s had a good meal. She prefers plain food and it all to be separated on the plate which is also a pain 😞 We sit at the table for dinner as a family so she can see that Mummy and Daddy are eating their dinner but when I say “would you like to try some” she just replies “no thanks”. Grateful for ideas, resources you’ve found helpful or a typical day of breakfast, lunch and dinner.