Iowa loose meat sandwiches are a Midwestern staple featuring seasoned ground beef steamed with onions, mustard, and water, then piled onto soft buns. The result is a savory, tender sandwich that's simple to make but surprisingly craveable.
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Combine 1 pound lean ground beef, ¼ cup water, 1 tablespoon yellow mustard, 1 teaspoon sugar, 1 teaspoon salt, and 1 teaspoon pepper in 10-inch skillet. Bring to simmer over medium heat, breaking up meat with spoon. Reduce heat to medium-low to maintain gentle simmer and cook, stirring frequently, until meat is no longer pink, about 5 minutes. Stir in ½ cup finely chopped onion, cover, and remove from heat; keep warm while preparing buns.
Spread extra mustard on the bottom bun of 4 hamburger buns, then, using slotted spoon, mound beef mixture over top. Cap with sliced dill pickles and bun tops. Serve.
Store cooked beef mixture refrigerated in an airtight container for up to 2 days; reheat gently in a skillet over medium heat with a splash of water if needed.
The beef is steamed until crumbly rather than formed into a patty, so the meat stays loose and breaks apart as you eat it, distinguishing it from a traditional hamburger.
Yes, but 85 percent lean is preferred because the extra fat keeps the meat moist during steaming; 90 percent may be slightly drier.
About 10–15 minutes total: roughly 5–10 minutes to steam the beef until cooked through, plus time to warm the buns.
Yes, you can cook the beef mixture up to 2 days ahead and refrigerate it; reheat gently in a skillet or microwave before serving.
Soft hamburger buns are traditional; lightly toast them for structural integrity if your beef mixture is very moist.
