Place bread, turkey and cheese in a large bowl and blend gently with a large spoon. In another bowl, whisk eggs, add flour and whisk, and then add mustard, melted butter, eggs, milk, salt and pepper. Whisk thoroughly.
Pour milk mixture over the bread, turkey and cheese; stir gently to blend (be careful not to over-stir as the bread can become overly moist and break apart).
Let stand for 5 to 10 minutes for bread to absorb liquid.
Pour into a buttered 2-quart baking dish.
Preheat the oven to 350° F and bake for 50 minutes (should be lightly golden and puffed). Test with a knife inserted into center — it should come out clean with little liquid on the knife.
*Any KING'S HAWAIIAN product, cubed, will be ideal for this recipe, including Mini Sub Rolls or Original Round Bread.