In a high speed blender add all the ingredients and blend until smooth. If making a different flavor, add the mix-ins required and blend once more.
Pour into a large glass or a protein shaker bottle and enjoy immediately.
* Casein, whey, or brown rice protein powder. Do not use a mass weight gainer protein powder.** Almond butter, cashew butter, sunflower seed butter etc. TO STORE: Weight gain smoothies should be enjoyed within 2 hours of preparation, but they can be stored in the refrigerator for up to two days. When ready to drink, be sure to add a splash more milk to thin it out. TO PREP: Prepare baggies of oats and protein powder. When ready to make a shake, simply throw it into a blender with the nut butter, maple syrup, milk, and any add-ins and blend until smooth.Please refer to the post for 10 fun flavors to make.