Classic Griddled Philly Cheese Steak Sandwich

Ingredients

• 1 large bell pepper, sliced into thin strips
• 1 large red onion, sliced into thin rings
• 1 tsp. kosher sea salt
• 1 tsp. garlic powder
• 1.5 tsp. ground black pepper
• 1 tsp. dried basil
• 4 tbsp. canola oil
• 1 tsp. onion powder
• 2 boneless beef sirloin strip steaks
• 200g baby bella mushrooms, sliced
• 8 slices provolone cheese
• 1 large French baguette, cut into four pieces and split open
• 1 tsp. dried thyme