Wash the orange, cut into 8-12 pieces. If there are bones, then you need to remove. Orange DO NOT CLEAN! Straight to the skin.
Put an orange in a container, pour milk, butter and grind with a blender.
Then add sugar, eggs and mix with a mixer.
Pour the dough into a mold.
If you are baking in a regular shape (round), add baking paper. I was baking in a muffin tin, so I smeared it with butter and a little flour.
Bake at 180 ° for about 30-40 minutes. But the time depends on your oven. I stood for 55 minutes. We try the readiness with a stick. Sprinkle the finished cooled cake with icing sugar.