Rinse the green beans under cool running water. Trim the ends if they haven’t been pre-trimmed.
In a microwave-safe bowl, measure and add 1 cup of water.
Place the trimmed green beans into the bowl with the water. Make sure they are evenly distributed.
Cover the bowl with a microwave-safe plate or lid to trap steam while cooking.
Microwave on high for about 4 to 5 minutes, adjusting time based on your microwave wattage and bean thickness.
Carefully remove the bowl (it will be hot!) and check if the green beans are tender but still crisp. Microwave for an additional minute if needed.
Drain any excess water. Add 1 tablespoon of butter and season with salt and freshly ground black pepper to taste. Toss well to coat and serve immediately.
Notes
Use olive oil or dairy-free butter instead of butter for a vegan option.
Add garlic powder, lemon zest, or red pepper flakes for extra flavor variations.
Store leftovers in an airtight container in the fridge for up to 3 days.
Reheat with a splash of water to keep beans moist.
To freeze, blanch green beans first before freezing for up to 2 months.