Whisk together the eggs, coconut oil and maple syrup.
Stir in remaining ingredients and mix until well combined.
Pour into a parchment lined 8 x 8 baking dish, or 9 x 5 loaf pan.
In a small bowl, mix all crumble ingredients together with a fork. Crumble the top of the cake and bake for 30-35 minutes, or until a toothpick comes out dry.
Slice into 16 small squares if using an 8 x 8 pan, or 8-10 larger slices using a loaf pan.