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1
In a large skillet, heat olive oil and add sliced mushrooms, green pepper, onion, salt and pepper (if using).
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2
Cook over medium heat 8-10 minutes or until tender and onions begin to caramelize.
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3
If slicing your own bread, it works best if the bread is not sliced all the way through, but sort of hinged at one side.
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4
Place 5-6 ounces frozen steak-umms on a heated griddle or frypan and cook until nicely browned, shredding meat with forks or a spatula as it thaws and cooks, and shaping meat into a bun-shaped pile.
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5
Drain off any fat as it accumulates in the pan.
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6
Place some of the cooked vegetable mixture on the pile of cooking meat.
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7
When meat is done to your liking, place opened hoagie roll over meat and use a long spatula to lift sandwich and turn it over.
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8
Put any dropped filling into the bun.
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9
Add sliced banana peppers to sandwich and any condiments (mustard or mayo).
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10
Place 2 (1-ounce each) slices provolone cheese over filling (or you may add melted cheddar spread at this point).
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11
Microwave sandwich for 30-45 seconds or until bun has softened and cheese is melted, if desired.
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12
Slice in half and serve hot.
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13
Repeat with remaining sandwiches.