Pour enough olive oil into the bottom of a shallow serving dish to create a thin layer.
Remove the feta from the package and crumble the entire block over the olive oil using your hands.
Finely dice the tomatoes and chop the green onions. Add both to the serving dish on top of feta.
Sprinkle 1 tablespoon of Mediterranean seasoning over the mixture. Add more as desired
Leave it in pretty layers (like pictured/this is how I do it) OR gently stir everything together until the feta, tomatoes, and green onions are evenly coated in olive oil and seasoning.
Taste and add additional Mediterranean seasoning as desired, up to 2–3 tablespoons total depending on the strength and saltiness of your seasoning blend.
Serve immediately or refrigerate until ready to serve. Pair with pita bread, naan, pita chips, crostini, crackers, or sliced baguette.