1. Preheat oven to 400 degrees F. Grease muffin cups or use muffin liners, but spray muffin liners with nonstick spray if using. 2. Combine the flours, sugar, baking powder, protein powder, and flax in a large bowl. Stir with whisk until combined. 3. Combine applesauce, eggs, oil and milk in a small bowl and mix with whisk or fork. 4. Mix into the flour mixture, just wetting it with the milk mixture. Fold in berries, so that the batter is wet, but not over mixed. 5. Mix together the ingredients for the topping: flour, butter, sugar and cinnamon with a fork until it resembles a course crumb. 6. Divide batter evenly among 12 muffin cups, and add topping. 7. Bake in the oven until golden and the tops spring back when lightly pressed, about 20-24 minutes. Do not overcook.