- Marinate your Portobello mushroom for up to an hour in your favorite salsa. 
- Heat up your grill to high heat. 
- Once your grill is hot, place Portobello with stem side facing up. Pour salsa back into Portobello and grill for 10 minutes, letting the salsa get nice and hot. 
- Meanwhile, grill your favorite veggie toppings: onion, bell pepper, jalapeno, or anything else your heart desires! 
- Flip your Portobello over (yes you are going to lose the salsa) and cook for 5 minutes with gills facing down. 
- Once your veggie toppings are all grilled, let your creativity shine and assemble away.