"Philly cheesesteak casserole is an all around winner with its tender beef, bell peppers, onions, and loads of melty cheese. It's basically a deconstructed sandwich, great for feeding a crowd!..."
INGREDIENTS
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2 pounds flank steak (thinly sliced against the grain)
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2 Tablespoons red wine vinegar
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2 Tablespoons Worcestershire sauce
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1 teaspoon baking soda
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4 cloves garlic (minced and divided)
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1/2 teaspoon onion powder
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1/2 teaspoon dried thyme
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1/2 teaspoon salt
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1/4 teaspoon black pepper
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2 cups water
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2 Tablespoons salted butter (divided)
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1 Tablespoon olive oil
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1 red bell pepper (sliced)
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1 green bell pepper (sliced)
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1 cup sliced white onion
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4 ounces cream cheese (cubed and softened)
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1/2 cup heavy cream
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1 cup grated pepper jack cheese
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6 slices provolone cheese