Sure. Roast them on parchment paper. You don't need to add oil since pumpkin seeds are fairly full of it already. I mean, you can, but why?
https://store.google.com/intl/en/id...Soy foods are a great source of plant protein. https://nutritionsource.hsph.harvar...n that,estrogenic or anti-estrogenic activity.
or use egg yolks. Each large size egg yolk will emulsify up to about 5 TBS of butter or up to around 3/4 cup of oil plus lemon juice, vinegar or wine --- the principle behind homemade mayonnaise, hollandaise. and several other sauces. I often make homemade mayonnaise to avoid all the additives that are in commercial mayonnaise.