An Annabel Karmel book worked for me. It was however, kind of common sense. Cook some veg, mash it up. COok some apple or pear, mash it up too. However, the clever bit was the recipes were including rich flavours, such as cinnamon or vanilla. "They" reckon that as the neural pathways which are developed in the infant years are the highways that future pathways branch off, the flavours a baby leans to enjoy are crucial to developing an open-minded approach to eating in later years.
More important than that, having a lot of foods rich in unhealthy flavours, such as sugar or salt, can set a person up for life with a preference for these foods.
We gave our DS a lot of strong flavours before the age of two, such as blue cheese, olives, garlic and capers. He now eagerly races to the cheese section of the supermarket yelling "stinky cheese, stinky cheese". (OK I know this is not a healthy choice. Better than being hooked on those bland cheese stick things or babybells however)
Summer fruit season shortly upon us means you can add all sorts of berries and things like rhubarb to your apple/pear puree.
And remember, a whole (nutritious) meal can made in a moment by spooning out the contents of an avocado, or mashing a banana.
OK, you can't cook well. There are a few things I can suggest that are easy to make and delicious, whilst simple to mash up for a young'un.
Leek and Potato Soup:
Two Leeks
Five big potatoes (ten small ones!)
About a litre of stock (veg or chicken)
Fry the leeks in oil or butter for a bit, drop in the other ingredients, cook till the spuds are breaking up and blitz.
Sweet potato soup:
Four sweet potatoes, peeled and chopped
One can of coconut cream
One onion, chopped
A tablespoon of your favourite thai or indian curry paste
Cook the onions and curry paste in some groundnut oil, add the rest of the ingredients, blitz the lot when spuds are cooked.
Macaroni cheese is a good choice as all infants love pasta. You can add mustard or a strong flavoured cheese to make it more interesting.
I'll think of some other stuff after tonight's half bottle of wine and cocktails have worn off.