In small pan, slice the sweet onion into thin slices. Cook on medium heat with 2 tablespoons of water until caramelized. Stir frequently and add water as needed so they don't stick or burn.
Place oven on broil and roast sweet red pepper. Turn pepper until it is charred all the way around. Remove from oven and take off skin. Slice pepper into thin strips and add in with caramelized onions.
Slice one large sweet potato into 1/2" slices. Place on a baking sheet and cook at 375℉ for 30 minutes or until the potatoes are soft.
While sweet potato is baking, prepare guacamole.
Slice open avocados and mash well in a medium mixing bowl
Add in onion,diced tomato, cilantro, jalepeno pepper,garlic, lime juice and sea salt. Mix well.
Assemble sandwich
Spread a generous amount of guacamole onto the bread, add a layer of spinach.
Add a layer of caramelized onion and roasted red pepper.
Add sweet potato slices
top with another layer of spinach.
Enjoy!