1. Whisk together corn muffin mix and next 3 ingredients. Dip sausages slices in batter, coating well.
2. Pour oil to depth of 1 inch into a Dutch oven; heat over medium-high heat to 375°. Fry sausages, in batches, 1 1/2 minutes on each side or until golden brown. Drain on paper towels. Keep warm on a wire rack in an aluminum foil-lined jelly-roll pan in a 200° oven. Serve with mustard.
*1 (16-oz.) package cocktail-size smoked sausages, drained, may be substituted. For testing purposes only, we used Bryan Cocktail Smokies.