|This picture doesn't even do them justice, sadly.|
Nonstick vegetable oil spray
2/3 cup sugar
2 T finely ground espresso beans (I used regular finely ground coffee)
1 T instant espresso powder
1/2 tsp cinnamon (In the future I'd use a full teaspoon)
1/4 tsp salt
1 large egg white
4 cups walnut halves
Preheat oven to 325F.
Whisk together sugar, ground espresso beans, instant espresso, cinnamon, and salt. Set aside.
Whisk egg white in a large bowl until frothy. Add walnuts and toss until coated. Sprinkle with dry mixture, mix to coat. Spread them onto prepared sheet in a single layer.
Bake for 5 minutes. Loosen with spatula, toss, and rearrange into a single layer again. Bake until walnuts are dry to the touch, about another 5 minutes.