Once the eggs are set, spread out the following ingredients on top of 1/2 of the omelette, so you can then flip the other side of the egg over top of the mixture: 1/3 cup of chopped onion, 1/3 cup chopped red bell pepper, 1/3 cup of chopped tomato, 1/2 cup diced ham, and finally 1 cup of spinach for some greens.