Purchase organic if possible or make your own. Choose a brand that contains only toasted sunflower seeds, with no sugar or vegetable oils added. This is perfect to use in place of nut butters. When baking with sunflowers use baking powder (gluten-free), as baking soda (bicarb) reacts to the sunflowers and turns green (it will taste the same but your baking won't look as pleasant to the eye).