Mix all dry ingredients with a whisk in a small mixing bowl, then add each wet ingredient and stir everything until well combined.
Spoon the mixture into a small ramekin, and press down lightly so it's all evenly filled in.
Microwave* on high for approx. 3 minutes until the center is cooked. (read notes below)
Let stand and cool for 2 minutes or so before cutting through the center with a serrated knife. Serve with any topping you'd like! Optionally store in the fridge for a few days as well.
Video
Notes
*Every microwave is different, some run high, hotter, or faster. Make any adjustments as needed or check it around 2 minutes and 30 seconds or mid-way to see what works best! You may need to cook for 4-minutes if your microwave is older/weaker.As noted by a reader below in the comments, you can bake these in the oven using ramekins or muffin tins:Bake at 350f degrees for 30 minutes - a reader tested this out and reported back that it comes out perfectly!