In a stand mixer, combine gluten free flour blend, cassava flour, guar gum, salt and sugar.
In a microwave safe bowl, heat milk for about 1 minute or until temperature reaches around 110° F. Gently mix in the yeast and allow to sit for 5 minutes. The top should become bubbly and frothy, indicating the yeast is working!
Pour the milk and yeast, melted 6 Tbs butter, and eggs. Mix for 2-3 minutes until well-incorporated. Using a spatula, scrape the edges of the bowl to form a ball with the dough. Cover the bowl with plastic wrap and allow rest in a warm location until doubled in size. This could take around 45 min to 1 hour.
Using as little gluten free flour as possible (around 2 Tbs), lightly dust a flat, clean surface and with a rolling pin, roll the dough out in the shape of a rectangle measuring 12" x 16". I like to roll my dough out on a silicon mat, which aids in rolling the gluten free dough.