Time
45 minutesYield
Serves 6Ingredients
Why This Recipe Works
If you've never used Bisquick baking mix before, it may sound terribly old-fashioned, but it's actually just a time-saving blend of flour, baking powder, salt, sugar, and shortening. You'll also lean into the ease of a store-bought rotisserie chicken. Using both of these convenience items allows you to focus your time and effort on making a rich, creamy sauce with meaty mushrooms, sweet leeks, and green peas that adds loads of flavor and substance to the casserole. For the crowning glory, doctor up the Bisquick by adding Gruyère and tarragon for cheesy, herby, utterly flavorful biscuits. Parbaking the biscuits before perching them atop the casserole seals their crust and prevents gumminess, which can result if you just plop the dough on top. After just 10 minutes in the oven, the finished dish that emerges is worthy of gracing any table—even one in the South.
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