Overnight Blueberry Oat Muffins

I'm a big fan of anything I can make the night before, to ease the morning routine. These muffins are a perfect example of this. I quickly make the batter in the evening, put a lid on the bowl and pop it into the fridge. In the morning, all I have to do is fill a muffin tin and bake! These muffins are perfect for breakfast or for lunchboxes. They don't …