To prepare gluten-free lemon poppyseed scones, substitute the all-purpose flour with a 1:1 gluten-free baking flour blend that includes xanthan gum or another binding agent. Confirm that all additional ingredients—such as baking powder and powdered sugar—are certified gluten-free, as cross-contamination can occur in some processed products. Texture may vary slightly, but the flavor remains bright and satisfying.