A minimalist logo with thick bold letters, all lower case, extra thick letters could work possibly. 

"no added" is the brand.

Logo should evoke simplicity, nature, health, purity.

Can include "fruit & nut spread" below the logo, or not. Since it is not actually part of the logo, but just an additional descriptor for a specific set of products. Same goes for "health drink".

Logo should also be flexible so that it can go well on labels bottles/jars with the spreads behind it. The spreads have different colors, some light some dark. We are thinking clear, see through vinyl labels for our products, so the logo should permit positive and/or negative colors. Meaning it can be for example a dark color like black, or whatever and/or it can be set to white or clear color for whenever the background is dark.