Philly Cheesesteak Casserole - Easy Low Carb Dinner Recipe

Ingredients

• 2 tablespoons red wine vinegar
• 2 tablespoons Worcestershire sauce
• 1 teaspoon baking soda
• 4 garlic cloves, minced and divided
• 1/2 teaspoon onion powder
• 1/2 teaspoon dried thyme
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper
• 2 cups water
• 2 lbs flank steak, sliced paper-thin against grain
• 2 tablespoons salted butter, divided
• 1 tablespoon vegetable oil
• 1 red bell pepper, sliced
• 1 green bell pepper, sliced
• 1 cup white onion, sliced
• 4 oz cream cheese, cubed and softened
• 1/2 cup heavy cream
• 1 cup shredded monterey jack cheese
• 6 slices provolone cheese
• Fresh parsley for garnish