Vegan Whole Foods Mac and Cheese

8 tbsp vegan butter
1 onion, diced
5 cloves garlic, minced
1/2 cup unbleached flour
4 cups water, divided
4 tsp vegetable bouillon
1/2 cup nutritional yeast
1 tbsp lemon juice
1/2 tsp turmeric
16 oz whole grain macaroni (I used whole grain penne) 
garlic salt to taste

Cook macaroni according to package directions.

While macaroni is cooking, melt butter over medium heat. Add onion and garlic and saute until onion is translucent, about 3 minutes. Add 3 cups water, vegetable bouillon, nutritional yeast, lemon juice, and turmeric,
Whisk flour in the remaining 1 cup of water until dissolved to make a slurry. Stir in slurry until thickened, whisking occasionally, about 7 minutes.

Stir in drained macaroni, and add garlic salt to taste.

Altered from https://www.ajc.com/entertainment/dining/vegan-mac-and-cheese-prepared-house-for-hot-bar/J0FfZlvqax2Gs5a8Wxm1NK/