Preheat the oven to 180°C. Line a deep about 22x22 cm cake tin with baking paper.
Melt the butter and sugar in a small pan over low heat. Take it off the heat, stir in the honey and let it cool.
Mix the flour and baking powder in a large mixing bowl. Add the spices and oats, then combine.
Cut the ginger into small pieces.
Mix the eggs are with milk.
Add the butter mixture to the flour mixture, then pour in the egg mixture. Combine.
Pour the batter into the tin.
Bake for about 60-75 minutes. Let it cool for 10 minutes in the tin, then transfer to a wire rack.
When completely cooled cut them into cubes or slices.