Microwaving is a fast option, but spinach can overcook quickly. Use short bursts of time, cover to trap steam, and check frequently to keep leaves tender and bright.
Simple steps:
Finishing touches: drain any excess liquid, season with salt, pepper, and a squeeze of lemon, or toss with olive oil and garlic. For larger amounts, do smaller batches for even cooking.
Microwaving works well for quick side dishes or prepping spinach for recipes where it will be mixed into other components.