• In a bowl, whisk together egg, vanilla, milk and yogurt. Set aside.
• In a mixing bowl,  mix together flour, sugar, cocoa powder, baking powder, baking soda and salt.
• Then, add in butter.
• Gradually, add in egg mixture and beat until combined.
• Let dough rest for 15 minutes.
• On a well floured surface, turn dough out.  Roll dough out to approx 1/2 inch thick.  Cut out dough with doughnut cutter or glass/lid.
• In a large, heat proof pot, pour in oil.  You will need to have approx 2-3 inches of oil in the pot. Heat oil until it reaches 360-375 degrees.
• Drop doughnuts and doughnut holes into hot oil. Work in batches of about 3-4 doughnuts. Do not overcrowd your pot.
• Cook each for only 1-2 minutes on each side.
• Remove from hot oil and let doughnuts drain on a plate lined well with paper towels.
• Let doughnuts cool before adding glaze.

FOR GLAZE:

• Whisk together powdered sugar and milk until smooth. Adjust ingredients to achieve your desired consistency.
• .Drizzle glaze on top of doughnuts or dunk tops to coat completely.