Add the olive oil to a large skillet and heat it on medium high heat. Add broccoli and salt. Cook 3 to 4 minutes until starting to brown, stirring occasionally.
Sprinkle the grated Parmesan cheese over the broccoli, followed by the cheddar cheese. Add 1/4 cup water to the bottom of the skillet and cover with a lid. Cook another 1 minute until cheese is melted and the water cooks out. Serve immediately!