Preheat oven at 350 degrees F.

Mix baking soda, baking powder, flour, sugar, ground nutmeg, and salt into large mixing bowl.

Melt butter in small pan or microwave. Beat 1 egg in medium mixing bowl. Add greek yogurt, vinegar, heavy whipping cream, butter and vanilla extract to egg. Mix well.

Add egg mixture to dry ingredient mixture in large mixing bowl. Add 25 smashed blueberries. Stir until all ingredients are evenly distributed.

Scoop mixture into piping bag. Add batter to 12-count mini donut pan (non-stick), filling each donut halfway full.

Bake for approximately 10 minutes.

In the meantime, add 25 smashed blueberries, 2 cups powdered sugar, ¼ cup hot water, 1 drop blue food colouring, and 1 drop red food colouring. Stir well. Set aside.

Remove donuts from oven and set aside to cool for 2 minutes.

Drizzle blueberry icing atop donuts.

Serve and enjoy your mini delights!

Keep any leftovers in sealed containers to preserve freshness.