Preheat the oven to 400 degrees.
Place the mushrooms on a baking sheet, top side down. Drizzle the mushroom with olive oil, balsamic vinegar, and season with salt and pepper. Cook in the oven until tender, about 5 to 10 minutes. Remove from the oven and set aside to cool before slicing about 1/4 inch wide slices.
Bring the broth to a boil. Cook the lentils according to the instructions on the package. Once cooked, drain well if needed and place in a large bowl to cool. Season with salt and pepper to taste.
In a bowl, whisk the dressing ingredients together until fully combined and set aside.
Once the lentils are cooled down mix them with the spring mix and portion evenly. Top with mushrooms, aprictos, and almonds. Sprinkle with finely crumbled blue cheese and spoon the dressing over top (be careful not to over dress the salad). Serve with bread.