Empanadas Con Queso

Ingredients

• 12 lb beef sirloin steak, trimmed
• 12 teaspoon cajun seasoning
• 12 teaspoon dried oregano
• 12 teaspoon kosher salt
• 14 teaspoon black pepper
• 2 tablespoons vegetable oil
• 14 cup onion, diced
• 14 cup frozen corn kernels
• 14 cup thick salsa
• 2 tablespoons beef broth
• 1 tablespoon tomato paste
• 2 sheets puff pastry, thawed
• 1 egg
• 1 tablespoon water
• 1 tablespoon unsalted butter
• 1 tablespoon all-purpose flour
• 1 cup whole milk
• 1 cup monterey jack pepper cheese, shredded
• salt and pepper, to taste