This is a simple recipe for cool and delicious yogurt blueberry muffins that can be made just by mixing the ingredients. Using rice oil instead of butter and adding plenty of yogurt creates a moist, melt-in-your-mouth texture and refreshing flavor. The high moisture content and low oil content result in a light aftertaste. Made with generous amounts of frozen blueberries, these muffins are delicious fresh out of the oven, but the flavor is even more enhanced when chilled. A perfect treat for warmer weather, and highly recommended for enjoying at home.