Preheat your oven to 300°F to 350°F
Spread the flour in a thin, even layer on a baking sheet
Bake for 5 to 10 minutes
Stir the flour halfway through for even heating
Check that the flour reaches 160°F internally if using a thermometer
Remove the flour from the oven and let it cool completely
Store the cooled flour in an airtight container
Alternatively, microwave flour in short intervals, stirring between each, until it reaches 160°F
Let microwave-heated flour cool completely before using or storing