Recipe 1: Homemade Oat Milk from Oh She Glows
Soak the oats first. Use steel-cut oats if available, but old fashioned oats will work just fine, too. After you soak the oats, rinse them again, blend for 10 seconds, then strain through a cloth and sieve.
Recipe 2: Oat Milk from Minimalist Baker
Use old-fashioned oats, and don't worry about soaking them—just blend everything together.
If you prefer something light and frothy, go for recipe 1. If you'd rather have something silky and a bit heavier, recipe 2 is the one for you.