1. Peel your onion, leaving the root intact. If your onion sits level, you can leave it alone. If not, cut a thin slice off the root to create a flat bottom.
2. Use a paring knife to cut a 1-inch deep cone into the top of the onion.
3. Insert a vegetable, chicken, or beef bouillon cube into the hole.
4. Fill the rest of the hole with butter, about 1-2 tablespoons. Season with salt and pepper.
5. Place the onion in a microwave-safe container and cover loosely with a lid.
6. Microwave on high until tender, about 6-8 minutes. Serve warm. Drizzle with the remaining liquid for extra flavor.

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