"You can enjoy a Philly Cheesesteak without even getting on a plane! These Philly Cheesesteak Stuffed Peppers are packed with roast beef and cheese...."
INGREDIENTS
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1 Tbsp butter
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1 onion, sliced thinly
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1 cup sliced mushrooms
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6 green bell peppers, tops removed and deseeded
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6 oz deli sliced roast beef, sliced into thin strips
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12 slices provolone cheese