⭐ Rice Flour (Best Gluten-Free Option)
1:1 (1 tablespoon rice flour per 1 tablespoon all-purpose flour)Rice flour is high in starch and gluten-free, making it an effective thickener that produces a smooth texture without altering the flavor significantly.
To avoid a gritty texture, mix rice flour with cold water before adding to the hot gravy and cook thoroughly to eliminate any raw taste.
The resulting gravy will be lighter and less elastic than with wheat flour, which may slightly reduce the hearty mouthfeel typical of Shepherd's Pie but still provides good thickening.