Cheesy Ground Beef Quesadillas

Ingredients (9)

• 1/2 Tablespoon olive oil
• 1 cup chopped yellow onion (about 1 small)
• 1 cup chopped sweet bell pepper (about 1)
• 1 lb. ground beef
• 1 1/2 teaspoons taco seasoning (storebought or homemade)
• Salt and pepper, to taste
• 6 large flour tortillas
• 3 cups shredded Mexican blend cheese
• 2 tablespoons butter