I did this with volume instead of weight measurements and regretted it (hah). Used coconut/almond milk which was also maybe not ideal. Might be nicer with just almond milk next time. Ended up adding about a half tsp of cumin powder and fresh ground black pepper to adjust the flavor, which helped. Probably adjust the garlic down a little and add onion flakes and some mustard next time. Mustard would help add a little more traditional baked mac and cheese type flavor. Yields approximately 1 pint depending on how long you reduce it.
Started 2 versions of mixed media basic mash: 1. Onion, jalapeños, Anaheim peppers 2. Garlic, jalapeños, Anaheim peppers, 3 oz serranos with seeds reduced (added serranos to bring peppers total to about 1 pound)