An easy recipe for Pineapple Oatmeal Muffins made with buttermilk, brown sugar, cinnamon and crushed pineapple. Mornings just got more tasty thanks to these Pineapple Oatmeal Muffins!  This is a simple muffin recipe featuring oats and buttermilk, which are always sure to make baked goods delicious. Made with real chunks of pineapple and pineapple juice, these muffins have a wonderful,