How to Make It
Heat oil in a medium skillet over medium-high. Add onion and cook, stirring occasionally, until tender, 3 to 4 minutes. Stir in oats; cook 1 minute. Add water and bring to a boil. Reduce heat to medium, and simmer, stirring often, until oats are tender, about 8 minutes. Remove from heat.
Stir ¾ cup cheese, ¾ teaspoon salt, and ¼ teaspoon pepper into oats mixture. Spoon ½ cup of oats mixture into each of 4 serving bowls; top each with ½ cup spinach and 1 poached egg. Sprinkle evenly with remaining 1 teaspoon each salt and pepper, and top evenly with remaining ¼ cup cheese. Sprinkle evenly with chives.