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1
In a medium plastic bag, combine flour, garlic powder and onion powder.
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2
Add beef and shake bag until beef is evenly coated.
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3
Refrigerate beef for at least 15 minutes.
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4
Preheat a medium, non stick sauce pan over medium-high heat.
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5
When it's hot, lightly mist pan with spray, then add beef.
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6
Brown beef on all sides about 1 minute per side, then reduce heat to medium. Add broth and liquid smoke.
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7
When liquid comes to a boil, reduce heat to low (liquid should still be boiling slightly).
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8
Cover and cook beef, stirring occasionally, for 1 to 1 1/2 hours or until it's very tender. (The pieces should easily fall apart when smashed wit a fork).
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9
Using a slotted spoon, drain any excess liquid from beef and discard.
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10
Using a fork, separate pieces so beef is somewhat shredded., then mix in barbecue sauce.
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11
During the last 5 minutes of cooking the beef, lightly mist a small, nonstick frying pan with spray and place it over medium heat.
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12
Add onion strips and cook until tender, about 5 minutes.
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13
Meanwhile, place bun halves, inside down, in a medium, nonstick frying pan over medium heat. Cook until just toasted, about 2-4 minutes.
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14
Place each bun bottom on a plate.
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15
Pile 1/4 of beef mixtures onto each bun.
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16
Top with 1/4 of onion strips.
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17
Add bun tops and serve immediately.