Sweet Potato Tart with Pecans and Marshmallows

Name: Sweet Potato Tart with Pecans and Marshmallows
Ingredients: 1 1/2 cups all purpose flour; 3/4 cup whole almonds; 1/2 teaspoon salt; 1/2 cup (1 stick) unsalted butter, room temperature; 1/3 cup powdered sugar; 1 large egg; 1 1-pound yam (red-skinned sweet potato); 3/4 cup sugar; 1/2 cup whipping cream; 2 large eggs; 1 teaspoon vanilla extract; 1/2 teaspoon ground cinnamon; 1/4 teaspoon ground ginger; 1/8 teaspoon ground nutmeg; 1/8 teaspoon salt; 1 cup mini marshmallows; 1/2 cup pecans, toasted, chopped; Sweetened whipped cream