Delicious Argentine Beef Empanadas You'll Love

Ingredients

• 3 cups all-purpose flour
• 1 tsp salt
• 2 tbsp vegetable oil
• ½ cup unsalted butter, at room temperature
• 1 cup 1% or 2% lukewarm milk
• 1 egg yolk
• 1 tbsp vegetable oil
• 1 medium onion, diced
• 1 lb(s) ground beef
• 2 tsp ground cumin
• 2 tsp paprika (mild or hot)
• 2 tsp chili powder
• 1 tsp dried oregano
• ¾ cup chopped green onion, about 6
• ½ cup chopped pitted green olives
• 3 hard boiled eggs
• Salt and pepper
• 1 egg, separated