Preheat oven to 400 and in a bowl whisk together flour, sugar and baking powder.
In a large bowl melt the butter (30 seconds in the microwave), then add in the honey and stir, add in the vanilla extract and egg and stir.
2.
In a small bowl combine milk and lemon juice and let sit for a minute, then add the milk mixture to the wet ingredients.
3.
Mix dry and wet ingredients together and spray a donut pan with cooking spray.
4.
Spoon batter into donut pan, filling each circle 3/4 full.
5.
Bake for 7 minutes, then turn the oven off and let the donuts sit in the oven for 1 minute. Remove from oven and allow to cool for 5 minutes, then turn onto a wire cooling rack and allow to cool before glazing.
6.
To make the glaze, stir the powdered sugar, lemon zest and lemon juice together until a smooth glaze forms. Spoon glaze onto the top of donuts.