Preheat oven to 350°F and grease donut pans thoroughly.
Cook beetroot until soft, then blend with soymilk, egg, melted butter, and vanilla extract until smooth.
In a separate bowl, whisk together whole wheat flour, almond flour, coconut sugar, baking powder, and salt.
Combine wet beetroot mixture with dry ingredients, mixing until just combined.
Transfer batter to a piping bag and pipe evenly into prepared donut pans.
Bake for 12-15 minutes until a toothpick inserted comes out clean.
For glaze, blend strawberries until smooth, strain through a fine sieve, then mix with powdered sugar.
Allow donuts to cool completely before glazing.