Sweet Potato Croissants

Bahan-bahan (36 porsi)

• Two .25-ounce packages active dry yeast
• 1 cup warm water ((110 to 115° F))
• One 15-ounce can sweet potatoes, (drained and mashed)
• 1/2 cup granulated white sugar
• 1/2 cup (solid) shortening ((such as Crisco))
• 1 large egg
• 1 1/2 teaspoons salt
• 5 to 5 1/2 cups all purpose flour
• 1/4 cup (1/2 stick) butter, (melted)