Combine the eggs, milk and butter, beat until smooth.
Combine the flour, cornmeal, seasonings, chili and cumin and stir to combine well.
Pour the liquid ingredients in and quickly stir to combine and eliminate all lumps.
Pour the batter into the muffin tins filling 3 quarters full.
Place the popovers into the oven and bake for 35 minutes at the end of the roast=s cooking time and during the rest period, turning the oven up to the desired temperature after you have removed the roast from the oven. Serve immediately.