Spinach with a Twist Recipe

Ingredients

• 1 tablespoon olive oil
• 1 small yellow onion, sliced
• 1 (14.5 ounce) can diced tomatoes, drained
• 1 (10 ounce) package frozen chopped spinach, thawed and drained
• 1 pinch salt and pepper to taste
• 3 ounces Roquefort cheese