* 1 1/2 lbs. ground beef
* 1/3 C plus 3 TBSP ketchup, divided
* 1/3 C dried breadcrumbs
* 1 large egg, beaten
* 1 TBSP Dijon mustard
* 1 tsp. salt
* 1/2 tsp. pepper
* 4 TBSP unsalted butter
* 1/4 C all-purpose flour
* 2 C. canned, reduced sodium beef broth
* Salt and pepper to taste
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