On low, or medium low heat add your vegan butter and stir. If you want to add a nutty, richer flavor to this, let the butter brown just a little bit.
2 tablespoons vegan butter
Add the all purpose flour and stir. Don't let the roux brown. Only cook this for about two minutes. Keep the heat low.
2 tablespoons all purpose flour
Turn the heat up a little bit. Add ⅓ of your dairy free milk and whisk the whole time. Don't let it form any lumps. Add the rest of your milk and stir the whole time. Keep stirring until it thickens up. Should take 5-8 minutes. Keep in mind, the sauce thickens more as it cools.
1¼ cups unsweetened, plain oat milk
Add salt and any other seasonings you like.
¼ teaspoon salt, pinch nutmeg, ¼ teaspoon garlic powder