Preheat oven to 350 degrees. Slice whole bag of potatoes into similar sized pieces. Place in large casserole dish.
Add coconut oil, balsamic vinegar, lemon juice, rosemary and 2 tbs of salt into a small mixing bowl. Pour over potatoes and place in oven.
Stir potatoes every 30 minutes. Total cook time in oven is 2 hours.
A little before the 1 hour and 30 minutes mark place mushrooms, onions, and remaining 2 tbs salt in a medium saute pan on medium heat. Cook for 7-9 minutes.
Add mushrooms and onions to potatoes and cook for the final 30 minutes.
Recipe by Peppers and Peaches at https://www.peppersandpeaches.com/lemon-rosemary-balsamic-potatoes/