I'm always looking for a new sheet-pan hack, and this one just may take the crown. Quesadillas are a classic late-night snack or easy dinner, but when I need to serve a crowd, I bring out the sheet ...

Preheat oven to 375°. In a large skillet over medium heat, heat olive oil. Add bell peppers and onion and cook until soft, about 5 minutes. Remove from skillet and set aside. Add ground beef to ...