Preheat oven to 350ºF (177ºC) degrees. Line a large baking sheet with parchment paper or a silicone baking mat. Lightly flour the baking sheet. Set aside.
In a medium size bowl, whisk together butter, oil, egg, vanilla, and sugar until combined. Set aside.
1 Tablespoon (14g) unsalted butter, 3 Tablespoons (45 mL) vegetable or canola oil, 1 large egg, 1 and ½ teaspoons vanilla extract, ½ cup granulated sugar
In a large bowl, toss together the flour, baking powder, salt, pistachios, and white chocolate chips. Add the wet ingredients to the dry ingredients and gently mix with a large wooden spoon or sturdy rubber spatula until everything starts to come together. Mixture will be crumbly. This is ok. It will come together in the next step.
1 and ¾ cup (210g) + 1 Tablespoon all-purpose flour, 1 teaspoon baking powder, ⅛ teaspoon salt, 3 ounces (60g) roasted salted pistachios, ½ cup (85g) white chocolate chips
Check out this Instagram reel to see how I make my biscotti. Turn dough out onto lightly floured baking sheet and, with floured hands, pat dough into a rectangle about ½" thick. My rectangle was 6" wide and 7 and ½" long (using a ruler or a ruled silicone baking mat is helpful here). Brush entire slab (top and sides) with egg wash.
1 large egg beaten with 1 Tablespoon water
Bake dough slab for 20-22 minutes, or until the top and sides of the slab are lightly browned. Remove from the oven, but do not turn off the heat. Place baking sheet on a wire rack and allow to cool for 10 minutes. Once the dough is cool enough to touch, cut into 1" thick slices using a sharp knife. Cut these 1" slices in half, making a perpendicular slice down the entire slab. Set slices cut sides up on the baking sheet. Return to the oven to bake for 6 minutes. Remove from oven, turn biscotti over, and bake the other side for 6 minutes. Remove from the oven and allow to cool for 3 minutes on the baking sheet (cookies will become crunchy as they cool). Transfer biscotti to a wire rack to cool completely before serving. Biscotti stay fresh in an airtight container up to 2 weeks. Baked biscotti may be frozen up to 3 months.
Notes
*If using roasted unsalted pistachios, increase salt to 1/4 teaspoon.Adapted from Funfetti Biscotti
Nutrition Disclosure
All nutritional values are approximate and provided to the reader as a courtesy. Changing ingredients and/or quantities will alter the estimated nutritional calculations.