Step 1

Preheat the oven to 400 degrees F.

Step 2

Grease a 9x9-inch casserole dish.

Step 3

Prepare the corn muffin mixes according to the package directions.

Step 4

Add the chopped onion and the spicy brown mustard to the corn muffin batter and stir until well-mixed.

Step 5

Spread 1/2 of the corn muffin batter into the prepared baking dish.

Step 6

Top the batter layer with the sliced ham and then the shredded cheese.

Step 7

Top the cheese later with the remaining batter, gently spreading it to cover.

Step 8

Bake until the cornbread is golden, about 25-30 minutes.

Step 9

Allow the casserole to cool for 5 minutes.

Step 10

Garnish with the fresh chives and serve.