"To toast the oats" means to cook them in a dry pan over heat until they turn golden brown, which adds a nutty flavor and improves the taste of the oats. Full definition
I prefer to make my overnight oats with toasted oats. (onelovelylife.com)
Once hot place the rolled oats in the dry pot for about 3 - 5 minutes to lightly toast the oats. (craftsy.com)
This crunchy and highly addictive peanut butter granola is made with crunchy toasted oats, creamy creamy peanut butter and is studded with sweet dates. (connoisseurusveg.com)