Combine salsa, water, and salt in a medium saucepan and bring to a boil.
Whisk in cornmeal, return to a boil, and reduce heat to low.
Stir regularly to prevent lumps. Once thickened, about 10 minutes, turn off burner.
Stir in corn and olives.
Pour mixture into a 9 x 9 pan and spread evenly.
Top with beans, green onions and/or cheese.
Enjoy with a splash of hot sauce.