These must have tasted much better if I hadn’t substituted butter with canola oil and yogurt. I just felt like "healthier" muffins all the sudden today. Maybe the idea wasn’t too terrible, but the problem was the proportion :P And maybe I didn’t need to add soy milk at all. But the toasted walnuts and coconut flakes, along with the slightly tart dried cranberries, made the muffins pretty tasty, so this was not a total failure after all.
I’ll try again and post a recipe then (if I had a success).