This salad is great on its own, or as a side dish for grilled chicken, salmon, or steak. Or try adding a can of chickpeas or kidney beans for some extra protein.
Heat a large saute pan over medium heat and add olive oil. Add bread cubes and cook, stirring often, until toasted, about 5-10 minutes. Season with salt and set aside.
Combine tomatoes, cucumbers, peppers, onion, olives, and feta. About 30 minutes before serving, add dressing and croutons and let stand at room temperature so all the flavours can combine and the bread can soak up some of the dressing.