1. Bring water and lentils to a boil, then simmer for 7 minutes, until soft.
2. Preheat oven to 400° F.
3. In a large bowl, sift together the dry ingredients (flour, oats, sugar, baking powder, cinnamon, salt).
4. Allow lentils to cool slightly.
5. Grease muffin tin (or line with baking cups— we love the parchment paper ones).
6. When lentils are lukewarm, whisk in egg, oil and kefir/yogurt/milk until smooth.
7. Add the lentil mixture to the dry ingredients and combine until just mixed.
8. Toss frozen blueberries in a bit of flour to coat. 
9. Fold the blueberries into the batter.
10. Scoop batter into muffin tin, filling each cup 2/3 full.
11. Bake for ~ 18 minutes in preheated oven (until they are pale golden and springy to the touch).
12. Let cool and enjoy!

Mix it up by adding any favourite fresh or frozen fruit in place of the blueberries.