Biscotti recipe

so I had someone ask me for the recipe - to be honest with you, I don't feel worthy to post this even. First of all - i love to bake but would never consider myself Awesome at it, secondly - i have never made biscotti before and sorta wonder if I messed this up a little. But anyways - here is the recipe I used. (p.s. I cannot take the credit, someone made it for something I was at, and it was delicious so she gave me the recipe)

Cinnamon Sugar Biscotti
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Yield: about 20-24 cookies
Ingredients:
For the dough:
2 cups all-purpose flour
1½ tsp. ground cinnamon
1 tsp. baking powder
¼ tsp. salt
1 cup sugar
6 tbsp. unsalted butter, at room temperature
1 large egg plus 1 large egg yolk
1 tsp. vanilla extract

For the topping:
¼ cup sugar
1 tsp. ground cinnamon
1 large egg, lightly beaten

Directions:
Preheat the oven to 325˚ F. Line a baking sheet with parchment paper or a silicone baking mat. In a medium bowl, combine the flour, cinnamon, baking powder, and salt; whisk to blend and set aside. In the bowl of an electric mixer, cream together the butter and sugar on medium-high speed until lightly and fluffy, 3-4 minutes, scraping down the bowl as needed. Blend in the egg and then the egg yolk, beating well after each addition. Blend in the vanilla until incorporated. With the mixer on low speed, blend in the dry ingredients just until incorporated and a dough is formed.

Divide the dough into two halves. Shape each half into a log 9 inches long by 1½ inches wide on the prepared baking sheet, spacing the logs at least 3-4 inches apart. In a small bowl, combine the sugar and cinnamon for the topping and stir to blend well. Lightly brush the tops of the logs with the beaten egg, and sprinkle generously with some of the cinnamon sugar mixture.

Bake for 40-45 minutes, rotating halfway through baking, until the tops are golden brown and slightly firm to the touch. Remove the pan from the oven but maintain the oven temperature. Once the logs are cool enough to handle, slice on the diagonal into 1½-inch slices (about 10-12 per log). Place biscotti cut side-down on the baking sheet and sprinkle with more of the cinnamon sugar mixture. Bake an additional 10-15 minutes, until crisp and golden.

Now the tricky part - when I made it the dough was super crumbly and dry which did not seem right to me. I had to press it all together and then into logs. I don't think that's how biscotti is supposed to be. I think it's supposed to be a lot wetter and stickier. But it still turned out great and you never would've known. But when I looked at another recipe for it (on allrecipes.com) it was the exact same thing, but only 2/3 cup of sugar. Maybe that would've helped. maybe my eggs weren't big enough, or maybe I should've put a whole stick of butter in it. I don't know. Something wasn't quite right. But it still tasted fine. and the texture was fine in the end.

Richard loved it!!!!! :) (that's what I was going for at least)