Skinny baby - what can I give to fatten her up?

[Sammy74]

I am looking for a bit of advice with regards to weaning foods for my baby girl. She is 6 months old and weighs 13.5pounds. She seems perfectly happy, but is dropping down the centiles and the HVs are always on at me about her weight. She really isn't interested in her milk and only takes around 16 oz a day. She has been on solids for the last 8 weeks and will eat a whole variety of things e.g chicken/beef casserole, avocado, fromage frais, yoghurts, rice pud etc but doesn't eat more than around 6 teaspoons at a meal. Does anyone have any ideas as to any other calorific foods I could give her to help her put on weight?

Any advice gratefully received!

My dd was like this as a baby and the advice I was given at the time was to add some butter to her veg/main meals so she was getting some extra fat. I'm sure you are already doing it but make sure her yoghurts, etc are full-fat not low-fat ones. (DD is nearly a teen now though so hope this advice is still current!)