If you dont want to throw them out but are unsure about giving them like that to bubs, how about making a lentil soup? Its something we make all the time as its cheap, hearty and tasty. You could try this one and add your puree to it:
Lentil Soup
You might find that she will be more keen to eat them if you are eating them too. We have fed this to our boy (while we are having it for dinner) with much success.