Cool, creamy, and ridiculously comforting! This Lemon Blueberry Muffin Smoothie uses oats to give it a subtle doughiness that pairs perfectly with the fresh and vibrant flavours of lemon and blueberry. I am a woman obsessed. You know those muffins I whipped up last week? The soft and tender ones made with lots of lemon, blueberries, Greek yogurt, and oh my?