For the topping, combine and mix all ingredients together until crumbly and set aside.

For the filling, mix ingredients together until well blended and pudding-like in consistency. Set aside.

For the batter, mix the ground flax seed and 6 Tbsp water together and set aside for at least 5 minutes to gel.

Mix all the rest of the ingredients in a large bowl and stir just until combined. Add the flaxseed mixture and stir until thoroughly mixed.

Spray the muffin tin with a non-stick baking spray, or put paper muffin cups in each.

Divide half the batter evenly between 14 muffin cups. Put 2 teaspoons of filling in each muffin cup and then top with the remaining batter. Sprinkle the topping on top of each, pressing it in lightly.

Bake the muffins at 375 – 400 degrees for 18-20 minutes or until a knife inserted into the center comes out clean. Remove them from the oven and wait 5 minutes before transferring them to a cooling rack.