Recipe information
Yield
Makes 8 servings
Ingredients
Preparation
Step 1
Preheat oven to 350°F. Spray 9x9x2-inch metal baking pan with nonstick spray. Whisk flour and next 5 ingredients in medium bowl. Using electric mixer, beat squash, brown sugar, butter, egg, ginger, and 1 teaspoon vanilla in large bowl to blend. Fold in flour mixture and 1/2 cup hazelnuts. Transfer to pan, spreading to edges (layer will be thin). Bake cake until tester inserted into center comes out clean, about 30 minutes. Cool.
Step 2
Bring cream just to boil in small saucepan over medium heat. Remove from heat. Add white chocolate and remaining 1/4 teaspoon vanilla; whisk until smooth. Let stand at room temperature until thick enough to spread, about 20 minutes. Spread over cake (layer will be thin). Sprinkle remaining 1/4 cup nuts over. DO AHEAD: Can be made 1 day ahead. Let stand at room temperature. Cut into 16 squares and serve.
