Steps

• In a small bowl, dissolve yeast in warm water. Let stand for 5 minutes until foamy.
• In a large bowl, combine yeast mixture, sugar, milk, shortening, salt, and eggs. Beat until smooth. Gradually add flour, mixing until a soft dough forms.
• Turn dough out onto a lightly floured surface and knead for 5-7 minutes, or until smooth and elastic. Place dough in a greased bowl, turning to coat. Cover and let rise in a warm place for 1-1.5 hours, or until doubled in size.
• Punch down dough and turn out onto a lightly floured surface. Roll dough out to 0.5-inch thickness. Cut out donuts using a donut cutter or two different-sized round cutters.
• Place donuts on a baking sheet lined with parchment paper. Cover and let rise for 30 minutes.
• Heat oil in a large pot or deep fryer to 350°F (175°C). Carefully drop donuts into hot oil, a few at a time. Fry for 1-2 minutes per side, or until golden brown.
• Remove donuts from oil and place on a wire rack to drain.
• In a shallow bowl, combine sugar and cinnamon. Dip warm donuts in melted butter, then coat in cinnamon sugar mixture.
• Serve immediately and enjoy!