Maple-Pecan Sticky Bars

Name: Maple-Pecan Sticky Bars
Yield: Makes 30 Servings
Ingredients: 1/2 cup (1 stick) unsalted butter, room temperature; 1/4 cup sugar; 1 large egg yolk; 1 1/2 cups all purpose flour; 1/8 teaspoon salt; 1/2 cup pure maple syrup; 1/3 cup (packed) golden brown sugar; 1/4 cup whipping cream; 3 tablespoons unsalted butter; 1/2 teaspoon vanilla extract; 1 1/2 cups coarsely chopped pecans