To steam cauliflower on the stove, you'll want to start by filling a large pot with about an inch of water. Don't worry if you're not sure how much that is - just think of it as the amount of water you'd use to make a cup of tea. Next, add a steamer basket to the pot and fill it with your cauliflower florets.
Now, here's the important part: making sure your water is boiling before you add the cauliflower. You want it to be rolling like a mini-geyser before you add your veggies. Once it's boiling, reduce the heat to a simmer and cover the pot with a lid to trap all the steam inside.
As you wait for your cauliflower to steam, you can start to think about all the delicious ways you can serve it. Will you drizzle it with olive oil and sprinkle with parmesan cheese? Or maybe you'll add some lemon juice and garlic for an extra kick? The possibilities are endless!
How to Steam Cauliflower (with Pictures) - wikiHow