Ontbijtkoek - Dutch Spice Cake is a breakfast cake, also called Peperkoek - commonly eaten in the Netherlands and Belgium, filled with spices like cinnamon, ginger, clove and more. A mixture of grains, brown sugar and milk.
Preheat oven to 300 F. Spray a 3 1/2 pint cake pan with non stick spray. Sprinkle with breadcrumbs, if desired.
Sift flours and spices into a large bowl.
Add sugar and mix well with a whisk, pressing down to remove lumpy sugar pieces.
Gradually add milk and whisk well until thoroughly combined.
Transfer to prepared baking dish. Bake for 60-75 minutes, until a tester inserted comes out clean.
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Notes
Some versions are made with 100% all purpose flour or only a mixture of all purpose and rye. You can mix the grains as desired.The flavor in this gets better with time as the spices have time to develop. Wrap tightly in aluminum foil after cooling completely. This will taste fantastic on day 2 or day 3.