Jalapeno-Ground Beef Cornbread

1 cup yellow cornmeal
1 cup milk
2 eggs, beaten
3/4 teaspoon salt
1/2 teaspoon baking soda
1 (1 pound 1 ounce) can cream-style corn
1 pound Cheddar cheese, grated
1 large onion, chopped
1 pound ground beef
1 to 4 jalape