Trim and wash the cauliflower. Chop it into bite-size pieces.
Place the cauliflower in a microwave-safe bowl with 1 tablespoon of water. Cover tightly with a microwave-safe plate or plastic wrap. Microwave on high until almost tender, about 4 minutes. Drain.
Heat the oil in a large 12-inch skillet over medium-high heat. Add the cauliflower, garlic, salt, pepper, and dried thyme.
Allow the cauliflower to cook undisturbed until some pieces are browned on the bottom, 2-3 minutes.
Gently stir and keep cooking for 1-2 more minutes, then serve.
Video
Notes
In the first step, when you microwave the florets, you shouldn't overcook them. Overcooking will result in mushy cauliflower. So, start with just 4 minutes - you can always add a minute or two, or reduce the heat when they're in the skillet and saute them for a little longer.
You can skip pre-steaming the cauliflower in the microwave, but then you'll need to cook it low and slow over medium or medium-low heat until it's tender-crisp. You'll also need to add a splash of water to the pan midway through cooking.
You can keep the leftovers in an airtight container in the fridge for 3-4 days. Reheat them in the microwave at 50% power or in a 350°F oven. I like them cold, too! Sometimes, I add them cold to a salad the next day for lunch. You can also freeze the cooled leftovers in a freezer-safe container for up to three months.