Maple Sticky Buns

Ingredients (13)

• 2 packages (1/4 ounce each) active dry yeast
• 2 cups warm water (110° to 115°)
• 1/4 cup shortening
• 1/2 cup sugar
• 1 large egg
• 2 teaspoons salt
• 6 to 6-1/2 cups all-purpose flour
• 6 tablespoons butter, softened
• 3/4 cup packed brown sugar
• 1 tablespoon ground cinnamon
• 3/4 cup chopped walnuts
• 1-1/2 cups maple syrup
• Additional brown sugar