Preheat your oven to 350 F/180 C with the rack in the center .
Chop and slice all the vegetables into small chunks.
Oil 9-10 muffin cups ( depends on the size of your cups).
In a large bowl beat eggs together. Add spices ( black pepper, cumin seeds & mustard seeds) & 2 tbsp of water. Combine well.
Mix in bell pepper, green chili, dill, parsley, red onion, cheddar cheese, spinach & scallions.
Pour the mixture into the muffin cups.
Bake 20-25 minutes or until fully cooked and a bit fluffy.
Serve hot or cold.
You can store these egg muffins up to 3 days in the fridge.
Notes
*In a large skillet over medium heat steam spinach until wilted ( 5 minutes). No need to add oil. Remove from the heat allow to cool. Squeeze as much liquid as possible.