"The tender texture of these cake doughnuts comes from folding in the dry ingredients gently by hand, rather than beating them in with a mixer. Use a clip-on deep-fry thermometer to gauge the oil temperature when frying these doughnuts: too low and they'll absorb oil, turning leaden and soggy; too high and they'll burn before the insides are cooked through...."
INGREDIENTS
•
1 large egg white
•
1/4 cup sugar
•
1 teaspoon ground cinnamon
•
1 1/2 cups chopped walnuts (about 6 ounces)
•
3 1/2 cups all purpose flour
•
1 tablespoon baking powder
•
1 teaspoon ground cinnamon
•
1 teaspoon salt
•
1/2 teaspoon baking soda
•
1 cup sugar
•
2 large eggs
•
2 teaspoons (packed) finely grated orange peel
•
1/2 teaspoon vanilla extract
•
1/3 cup melted unsalted butter, cooled briefly
•
1 cup sour cream
•
2 cups powdered sugar
•
1/4 teaspoon maple extract
•
5 tablespoons (about) heavy whipping cream
•
Canola oil (for deep-frying)