Steak Fajita Quesadillas - Lisa G Cooks

Ingredients

• 1 tbsp extra virgin olive oil (, divided)
• 227 g white button mushrooms (, sliced)
• 1 Medium onion, (, sliced in half moons)
• 1 Medium red pepper (, sliced)
• 3 Cloves garlic (, crushed)
• 453 g steak ((1 pound) (I used a sirloin), cooked and cubed)
• 1 Cup grated old cheddar cheese
• 4 Large whole wheat quesadilla (tortilla) shells
• salt
• pepper