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Mix sauce ingredients in small bowl and place in refrigerator.
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Sauté bacon until crisp.
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Remove bacon from sauté pan (place on paper towel) and add onion, pepper and jalapeño.
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Sauté veggies until softened.
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Remove veggies from pan and place on paper towel with bacon.
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Season ground beef with salt and pepper and make 8 thin patties.
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Divide bacon and onion mixture equally and place on top of 4 of the beef patties top with cheese.
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Place 'cover' patty on top and seal well.
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Grill 8 minutes on each side (don't turn too soon! burger will fall apart).
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Serve on Kaiser rolls with 2 tablespoons of sauce.
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Optional toppings:.
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Lettuce, tomato, pickles and onions.