In a large mixing bowl, whisk together the pancake mix, milk, and eggs until just combined. Set aside.

Heat a skillet over medium heat and add the breakfast sausage. Cook until fully browned and cooked through, about 5-7 minutes. Drain excess fat.

Preheat your oven to 350°F. In a greased baking dish, pour half of the pancake batter, then layer with cooked sausage and half of both cheeses. Pour remaining batter and top with rest of the cheeses.

Cover with aluminum foil and bake for 40 minutes. Remove foil and bake an additional 10-15 minutes until bubbly and golden brown.

Let cool for about 10 minutes before slicing and serving.