2tablespoons(30 grams) unsalted butter(melted and slightly cooled)
1large egg(at room temperature)
1teaspoonvanilla extract
For the glaze:
1cup(120 grams) powdered sugar
2-3tablespoons(30 to 45 ml) fresh key lime juice
Optional topping:
Crushed graham cracker
Instructions
To make the donuts:
Preheat the oven to 350°F. Spray a donut pan well with nonstick cooking spray and set aside.
In a large mixing bowl, mix together the flour, baking powder, and salt. Set aside.
In a separate mixing bowl, mix together the Greek yogurt, sugar, key lime juice, key lime zest, melted butter, egg, and vanilla until well combined. Add the dry ingredients to the wet ingredients and mix until just combined.
Pipe or spoon the batter into the donut cavities, you should end up with about 8 donuts. If using a 6-count donut pan, you will need to bake in two separate batches.
Bake at 350°F for 9-10 minutes or until a toothpick inserted into the donut comes out clean.
Remove from the oven and cool in the pan for 5 minutes. Remove the donuts from the pan and transfer to a wire rack to cool.
To make the glaze:
Add the powdered sugar and key lime juice to a mixing bowl and mix until well combined. If the glaze is too thick, add in a little extra key lime juice to thin it out. If the glaze is too thin, add in a little extra powdered sugar to thicken it up.
Dunk each donut into the glaze and return back to the wire rack. Top with crushed graham crackers if desired.
Allow to cool for 10-15 minutes so the glaze can harden. Serve and enjoy!
Notes
Yogurt substitute: If you don't have any yogurt on hand, you may use 1/3 cup milk instead. Storage instructions: The donuts can be stored in an airtight container at room temperature for up to three days.