I presume you mean Mezcla, Ixta Belfrage? I have that book and adore it. Without knowing your kids it's hard to say exactly what would be ok for them, so I will just lists some of my top hits and what I added to make a meal, and if you have any questions about them I would be happy to answer. Also it could be worth taking a peak at the Weekly New Recipe thread in this section and searching the book title as a number of us have made recipes and done mini write ups on how they went.
Crispy oyster mushroom skewers with crushed chickpeas
-served with flat bread, but is rich and hearty so ok without
Roasted cabbage with mango and harissa salsa
-served with grilled chicken
Cheesy polenta with curried onions
-served with sausages (this feels like a take on bangers, mash, and onion gravy and it's my favourite new discovery this year)
Dendê marinated prawns with burnt lime
-served jollof rice
Pappardelle with chipotle pancetta sauce
-served with rocket for greenery but would be fine without
Chicken with pineapple and 'nduja
-served with flat bread
Cannelloni enchiladas
-no accompniment needed
Duck with Mexicorn sauce and spring onion salsa
-served with crusty roll