Hey Abbey, thanks so much for your message we are so glad to hear you enjoyed this recipe! The recipe tips for a pasta bake are great too!

I even made this into a pasta bake and add chopped bacon medallions instead of mushrooms

Hi Hope, there are a lot of reasons that the calories can be different, different brands of ingredients can vary the calorie count substantially and the way ingredients are cooked can also alter the value. Unfortunately the apps available to the general public do not account for this. We understand that it can be frustrating that apps and websites might not match up to our calorie counts. However, the recipes have gone through a nutritionist and have been double & triple checked for accuracy. Have a look at this article HERE which explains how we work out nutritional information for our recipes, hope that helps!