Preheat oven to 350 degrees. In a small bowl, combine the topping ingredients. Set aside. In a medium mixing bowl, whisk together brown sugar, eggs, oil, milk and vanilla extract until combined.
In another medium mixing bowl, whisk together oat flour, oats, baking powder, baking soda, salt and ginger. Pour dry ingredients into the bowl of wet ingredients and whisk together until just combined.
Fold in cranberries. Spoon batter into the wells of a greased 9-cup muffin tin, about ¾ of the way full.
Top with a scoop of the oat/almond topping. Bake 18-20 minutes, until toothpick inserted into the center of the muffin comes out clean. Allow to cool.