Blueberry Donuts (30 Minute Recipe)

Ingredients

• 3 cups all-purpose flour
• 1/2 cup granulated sugar
• 2 teaspoons baking powder
• 1 teaspoon cinnamon
• 1/4 teaspoon kosher salt
• 1 and 1/4 cups frozen blueberries (the smaller the better)
• 3/4 cup milk
• 1 large egg
• 1 teaspoon vanilla
• 1 tablespoon butter, melted
• canola oil, for frying
• 2 cups powdered sugar
• 1/4 cup milk
• 2 tablespoons blueberry jam