Chipped beef & gravy over toast

Chipped beef & gravy over toast 1/4 cup butter, cubed 1/4 cup all-purpose flour 2 cups milk 2 packages (2-1/2 ounces each) thinly sliced dried beef 4 slices bread, toasted and halved In a microwave-safe bowl, microwave butter on high for 35 seconds or until melted. Stir in flour until smooth. Gradually stir in milk. Microwave, uncovered, on high for 2-3 minutes or until thickened, stirring every minute. Stir in beef; cook on high for 1 minute or until heated through. Serve on toast.