To make the congee, place the leftover rice and vegetable broth in a blender and blend for 10-20 seconds until the rice breaks down but still has visible small pieces.
Take a large pot (5-6qt) and add olive oil. Heat it over medium-high heat for a few minutes, add the ginger and green onions, and stir-fry for 1-2 minutes.
Add the blended rice and bring it to a boil, then simmer for 5 minutes or until it reaches your desired thickness. Add 1/4 tsp of salt or per your taste preference. Make sure to add enough salt so that it doesn't taste bland.
To make the topping, heat olive oil over medium-high heat in a large pan and cook mushrooms until golden. Add garlic and cook until fragrant (1-2 mins). Stir in chili garlic sauce, soy sauce, mirin, edamame beans, and peanuts until heated and combined.
To serve, add the congee to a serving bowl and garnish it with the mushroom, edamame bean, peanut topping, and sliced green onions. You can keep the leftovers for up to 5 days, and I suggest storing the congee and toppings separately.