Preheat oven to 400°.
Combine ketchup and mustard, stirring well with a whisk. Reserve 2 1/2 tablespoons ketchup mixture. Combine remaining ketchup mixture, beef, and next 6 ingredients (beef through egg) in a large bowl, stirring to combine.
Divide beef mixture into 4 equal portions. Shape each portion into a 4 x 2 1/2-inch loaf; place loaves on a jelly roll pan coated with cooking spray.
Spread about 2 teaspoons reserved ketchup mixture evenly over each loaf. Bake at 400° for 25 minutes or until done.
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