Beefy Breakfast Strudel with Gravy

Ingredients

• 1-1/2 cups sliced, Cooked (Leftover) Corned Beef Brisket
• 2 tablespoons butter
• 1/2 cup chopped onion
• 1/2 teaspoon minced garlic
• 2 tablespoons all-purpose flour
• 1/2 teaspoon salt
• 1/2 teaspoon pepper
• 2 cups heavy cream
• 1/2 teaspoon hot pepper sauce
• 1/2 teaspoon Worcestershire sauce
• 5 eggs, divided
• 2 tablespoons sour cream
• 1 package (17.3 ounces) frozen puff pastry, thawed
• 1-1/2 cups shredded hash brown potatoes, thawed if frozen
• 1 tablespoon everything bagel seasoning