You could just make guacamole or avocado dip...lemon juice, seasoning and mashed avocado. Save the pit...lemon juice isn't enough to keep it from oxidizing.

I had a recipe somewhere that called for olives and artichoke hearts, pureed with a bit of olive oil. But...since olives (and oil) are on my no list, i don't know where it got off too...

Pesto is quick and easy too...puree spinach with a bit of dried basil, add garlic and olive oil until you like the consistency. Mmmmm...I need to try this with grapeseed oil...

Fruit cooks down to a nice "butter" too. And you can come up with some spreadable pumpkin options by playing with a pie recipe. (I'm sure there are pumpkin butter recipes on the net, too)