How to Make It
Preheat oven to 300°.
Heat oil in cast-iron skillet over medium heat. Add onions, red bell pepper, and garlic to pan; cook for 4-5 minutes, stirring occasionally. Add tomato paste; cook 1 minute, stirring.
Stir in the vegetable stock, red wine vinegar, capers, salt, black pepper, red pepper, and tomatoes. Stir in the cauliflower; simmer for 10 minutes.
Gently crack the eggs over the tomato mixture. Sprinkle with ½ of the feta cheese and transfer pan to oven. Bake at 300° for 6-7 minutes or until eggs are just set. Remove from oven; sprinkle with remaining feta and serve immediately.