01 - 
                Carefully slice the onions, then warm 2 tablespoons of oil in a wide skillet on medium-high heat.
              
              
              
                02 - 
                Let the onions cook over high heat for about 10 minutes. Stir the whole time so they don't burn.
              
              
              
                03 - 
                Turn the heat to medium and cook the onions for another 10 minutes, keeping them moving now and then.
              
              
              
                04 - 
                Toss in a little bit of salt and cook the onions over medium-low for 10 more minutes until they turn rich and golden brown.
              
              
              
                05 - 
                Move the caramelized onions out of the skillet and place them somewhere safe for later.
              
              
              
                06 - 
                Pour in the last tablespoon of oil, toss in the mushrooms, and sprinkle lightly with salt.
              
              
              
                07 - 
                Stir the mushrooms every so often as they cook for about 5 minutes until they're tender.
              
              
              
                08 - 
                Toss in fresh spinach and give it a quick stir until it just starts to soften.
              
              
              
                09 - 
                Put the caramelized onions back into the pan with the spinach and mushrooms.
              
              
              
                10 - 
                Gently add the cream and a 1/4 teaspoon of salt into the pan. Let it just boil, then lower to a simmer.
              
              
              
                11 - 
                At the same time, boil the tortellini as it says on the package until it's perfectly cooked.
              
              
              
                12 - 
                Drain the pasta and carefully stir it into the cream sauce in the pan.
              
              
              
                13 - 
                Let everything simmer for a couple of minutes until the sauce is just a little thicker.
              
              
              
                14 - 
                Sprinkle in some black pepper and serve the dish while it's still warm.
              
              
              
                15 - 
                Top with extra black pepper if you feel like it.