1Heat oven to 375°F (350°F for dark or nonstick pan). Spray 9x5-inch loaf pan with cooking spray.
2In large bowl, stir flour, 1/2 cup oats, the flaxseed, brown sugar, almonds, baking soda and salt. Add blueberries; stir to coat in flour mixture. Stir in buttermilk and vanilla just until mixed. Spread in pan; sprinkle with 1 tablespoon oats.
3Bake 45 to 50 minutes or until toothpick inserted in center comes out clean and top is golden brown. Cool 5 minutes. Loosen sides of loaf from pan; remove from pan and place top side up on cooling rack. Cool completely, about 2 hours, before slicing.