Crack your eggs into the microwave-safe mug, add the milk, and season with a pinch of salt and pepper. Whisk briskly with a fork for about 15 seconds until the mixture looks pale yellow and slightly frothy. This little bit of air is what keeps the texture light instead of dense.
Microwave the eggs for 45 seconds, pull the mug out, and give it a quick stir with the fork. Pop it back in for another 30 to 45 seconds. Stirring halfway through stops the edges from turning rubbery while the center is still runny, which is the most common microwave-egg mistake.
While the eggs are in the microwave, slice your avocado, halve the cherry tomatoes, and roughly chop the spinach. This whole step takes under a minute if your ingredients are already washed, which is exactly why a little Sunday prep pays off on a Tuesday morning.
Tip the warm scrambled eggs into your serving bowl. Sprinkle the shredded cheese straight on top so it melts from the residual heat, then scatter the spinach around it so it wilts slightly. Arrange the avocado slices and tomato halves on top.
Add a small dollop of Greek yogurt to one side of the bowl, and finish with a pinch of chili flakes or everything bagel seasoning if you're using it. Serve immediately while everything is still warm