Mini Frittata Muffins With Chard and Caramelized Onions
Preheat oven to 350F degrees. Heat a large pan over medium heat. After 1 minute, add oil and let heat for another minute. Add chopped onion. Let onion cook for 15-20 minutes, stirring occasionally until well caramelized. If you prefer, sweeter more caramelized onions, let cook more. Once onions are