Avocado Paste Sandwich

We have an avocado tree and I make these sandwiches for myself all the time. My 16 month old does not like avocados and this is the only way he'll eat them. There is a variety that tastes very buttery and my grandmother used to call the avocado "poor man's butter" because she would use it on bread instead of butter when times were hard. By itself the paste is an excellent first food for baby.