1 pound lean ground beef
1 tablespoon unsalted butter
1/2 yellow onion chopped
1/2 green bell pepper chopped
1 clove garlic minced
2 teaspoons yellow mustard
3/4 cup ketchup
2 tablespoons brown sugar
1/2 teaspoon Kosher salt
1/4 teaspoon ground black pepper
Recipe
Add the ground beef to a large cast iron skillet (this browns very well) and brown until a deep brown crust appears before breaking the beef apart.
Stir the ground beef and brown until a deep crust appears on about 50 or so percent of the beef.
Remove the beef and drain the fat.
Add the butter, onions and bell pepper to the pan.
Let brown for 1-2 minutes before stirring, then let brown for another 1-2 minutes before stirring again.
Add the beef back into the pan.
Add the garlic, mustard, ketchup, brown sugar, salt, black pepper, to the pan.
Cook until the mixture is only slightly liquidy (about 75% of the mixture is above liquid), 3-5 minutes.
Served on toasted brioche buns.