I highly recommend a food processor or the CookingPal Multo for the base. It's very sticky and thick, and a blender (even high-speed) will be challenged incorporating these ingredients fully. For the ganache, I like to use a small processor - I use the processor attachment to the immersion blender. But, you can also soften the coconut butter/nut butter in a hot water bath and whisk/combine by hand until incorporated.