MAPLE-GINGERBREAD LAYER CAKE WITH SALTED MAPLE-CARAMEL SAUCE

Steps:

• For maple-coated pecans:
• Place large piece of foil on work surface. Combine nuts and maple syrup in heavy medium skillet (do not use nonstick) over medium-high heat and bring to boil, tossing to coat. Cook until syrup is dark amber and almost cooked away and thickly coats nuts, tossing often, 3 to 3 1/2 minutes. Scrape nuts onto foil. Working quickly with 2 forks, separate nuts. Sprinkle with coarse salt. Cool until coating is crisp and hard, about 1 hour. DO AHEAD: Pecans can be made 1 day ahead. Store airtight at room temperature.
• For cake:
• Preheat oven to 350°F. Butter and flour two 9-inch-diameter cake pans with 1 1/2-inch-high sides. Combine first 4 ingredients in processor; add ginger. Blend until ginger is finely ground, about 1 minute. Using mixer, beat maple sugar and butter in large bowl until fluffy. Beat in eggs 1 at a time (batter may look curdled). Stir 3/4 cup hot water and molasses in small bowl. Beat dry ingredients into butter mixture in 4 additions alternately with molasses mixture in 3 additions.
• Divide batter between prepared pans (about 21/2 cups each). Bake until tester inserted into center comes out clean, 30 to 32 minutes. Cool cakes in pans on racks.
• For frosting:
• Combine crème fraîche, cream, and both sugars in large bowl. Using electric mixer, beat until very thick and stiff.
• Cut around pan sides to loosen cake layers; turn out onto racks. Place 1 cake layer on platter. Spread with 1 1/3 cups frosting. Drizzle with 3 tablespoons caramel sauce. Top with second cake layer. Spread remaining frosting smoothly over top and sides of cake. Drizzle top of cake with 3 tablespoons sauce. Cover with cake dome; chill at least 1 hour. DO AHEAD: Can be made 1 day ahead; keep chilled. Let stand at room temperature 30 minutes before continuing.
• Cut pecans into pieces or leave whole. Press pecans into frosting on sides of cake. Cut cake into wedges. Spoon sauce over.