Tender Roast Beef with Cheddar Sauce on Onion Bun - cookrisp

Ingredients

• 1/2 cup ketchup
• 2 tablespoons light brown sugar, packed
• 1 tablespoon apple cider vinegar
• 1 tablespoon Worcestershire sauce
• 1/2 teaspoon garlic powder
• 1/2 teaspoon onion powder
• 1 tablespoon unsalted butter
• 1 tablespoon all-purpose flour
• 1 cup whole milk
• 6 ounces shredded sharp cheddar cheese
• 2 cups low sodium beef broth
• 1 pound thinly sliced deli roast beef
• 4 onion hamburger buns