Preheat oven to 350 degrees F. Grease a cookie sheet with non-stick cooking spray or butter.

Whisk together the flour and baking powder in a large bowl; set aside.

Use an electric mixer to beat the eggs and sugar in another bowl on medium speed. .

Add the melted butter and vanilla. Mix on medium speed until combined..

Gradually add the flour mixture in three batches. Blend well after each addition..

Use a rubber spatula or mixing spoon to gently stir in the toasted almonds. The dough should be stiff enough to hold in your hands without being too sticky. If it is too sticky, add a small amount of extra flour until it is workable..

Turn the dough onto the prepared cookie sheet. Divide the dough into two equal portions..

With lightly floured hands, shape each portion into a flat rectangle about 5-inches wide and 12-inches long. Space the "loaves" at least 2-inches apart..

Bake for 20-25 minutes, or until the loaves are golden brown. Allow them to cool on the pan for 5 minutes..

Gently transfer the loaves to a cutting board and use a serrated knife to slice them into 1/2-inch slices..

Place the sliced almond biscotti cookies back on the cookie sheet; placing them cut-side down. Be careful, they will be fragile and could break in half. Bake the almond biscotti cookies for 10 minutes or until golden brown..

Remove the pan from the oven and turn the almond biscotti cookies over so the other cut side is now facing up. Bake for 10 more minutes or until golden brown. Place finished almond biscotti cookies on a rack to cool..

Now that you have learned how to make almond biscotti, please be sure to view these other cookies recipes.