BLACK PEPPER BISCOTTI

Steps:

• Line large baking sheet with parchment paper. Mix first 4 ingredients in medium bowl. Using electric mixer, beat 1 1/2 cups sugar and butter in large bowl until fluffy. Beat in Grand Marnier, lemon peel and vanilla. Beat in eggs 1 at a time. Mix in dry ingredients. Cover and chill just until slightly firm, about 1 hour.
• Preheat oven to 350°F. Sprinkle powdered sugar on work surface. Divide dough in half. Roll each half on sugar to 11-inch-long, 2 1/2-inch-wide log. Transfer logs to prepared baking sheet, spacing 3 inches apart. Bake until firm to touch, about 40 minutes. Cool slightly.
• Reduce oven temperature to 325°F. Transfer logs to work surface. Discard parchment paper. Using serrated knife, cut logs into 1/2-inch-wide slices. Arrange slices, cut side down, on baking sheet. Bake until dry, about 20 minutes. Cool on racks. (Can be made 3 days ahead. Store airtight.)