Preheat oven to 350.
Combine beans, lemon juice, spinach, garlic and herbs in a food processor and blend until smooth.
Place mushrooms on a baking sheet with a little bit of olive oil on the bottom. Spoon the filling on top of the mushrooms evenly. Drizzle with olive oil and red wine vinegar.
Bake approximately 20 minutes, or until hummus is golden on top.
Serve with a delicious salad and homemade slausage.