In a medium sized pan over medium heat, add in 1/4 cup vegetable broth, mushrooms and onions and cook until fragrant. Add in the chard and continue cooking until onions are caramelized and chard is wilted and bright green, around 10-15 mins. Set aside and let cool.
Take a bagel, sliced in half, and toast them face down on low heat in a grill pan. Once toasted, flip over and add your choice on cheese, 1 slice on each half. Cover with a lid and allow cheese to melt.
Uncover and add on the mushroom and onion mixture, seal shut and enjoy!
