Preheat oven to 425 degrees and set out 2 donut pans
Using a hand mixer, cream together the butter, granulated sugar, brown sugar, and eggs
Add remaining ingredients (minus strawberries) and mix together well
Fold in diced strawberries
Transfer batter to gallon sized bag and cut one corner off. Use this to pipe the batter into the donut pans, filling almost to the top of the mold.
Bake for 15 minutes
Cool completely before adding icing