Preheat the oven to 400°F.
Remove the outer leaves and core from 1 medium cauliflower. Cut into bite-sized florets and rinse, then pat dry.
Arrange the cauliflower pieces on a baking sheet in a single layer with space between pieces.
Drizzle 1 tablespoon olive oil over the cauliflower and sprinkle 1 teaspoon salt evenly on top.
Toss the florets on the baking sheet until they are evenly coated with oil and salt, then spread them out again in a single layer.
Bake in the preheated oven for 20 minutes, or until the cauliflower begins to brown at the edges.
Remove from the oven and serve.