Keto Éclairs

INGREDIENTS PASTRY CREAM: 2 large egg yolks at room temperature ¼ cup (50g) powdered sweetener (I used Lakanto) ⅔ cup (160mL) heavy whipping cream 3 tablespoons (45g) salted butter 1 teaspoon (5mL) vanilla extract ⅛ teaspoon () xanthan gum ECLAIR BATTER: 1 cup (100g) blanched almond flour ¼ cup (28g) coconut flour 1 teaspoon () xanthan gum 1 teaspoon (4g) baking powder 1 cup (240mL) water ⅓ cup (80g) salted butter 1 teaspoon (5mL) vanilla extract 2 large eggs