Philly Cheese Steak-Stuffed Bell Peppers
Ingredients:
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3 large green bell peppers, halved lengthwise and seeded
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1 (14 ounce) package thinly sliced frozen Philly beef steak
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1 large sweet onion, diced
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1 (6 ounce) package sliced baby bella mushrooms, diced
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1 tablespoon olive oil
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1 tablespoon minced garlic
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1 teaspoon Montreal steak seasoning, or more to taste
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6 slices provolone cheese