Steps
1. Preheat oven to 375 degrees F
2. Combine olive oil, bell pepper, onion, asparagus, garlic, and salt & pepper in a bowl
3. Place vegetables in the center of a piece of aluminum foil
4. Wrap the foil around the vegetables, making sure it is tightly sealed
5. Bake in preheated oven for 30 minutes
6. Enjoy!