A classic sweet and tangy ground beef sandwich filling simmered with ketchup, brown sugar, and mustard, served on soft hamburger buns. Ready in about 35 minutes.
Chef's Note: The long simmer here is what actually makes this a "sloppy joe" rather than just seasoned ground beef — letting it cook down for 20 to 30 minutes thickens the sauce and lets the ketchup, brown sugar, and mustard meld into something more cohesive than a quick-mixed sauce would give you. If you're using a fattier ground beef than lean, drain off the excess fat before adding the sauce ingredients, since it can leave the finished mixture greasy otherwise.
This is a genuinely forgiving recipe for adjusting to taste — the ketchup, brown sugar, and mustard amounts are all easy to nudge up or down depending on how sweet or tangy you like it. It keeps well in the fridge for a few days, and the filling actually reheats nicely on its own if you want to make a batch ahead and toast fresh buns when you're ready to serve.
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