Preheat the oven to 350 degrees F.

In a 12 inch cast iron skillet or Dutch oven, over medium high heat, begin to brown the ground beef, stirring occasionally. Season to taste with salt and pepper.

When the meat is halfway browned, add the onions and jalapenos and continue cooking until the meat is fully browned and the onions are tender. Drain any excess grease.

Add the beans, BBQ Sauce, green chilis, chili seasoning, brown sugar, ketchup and mustard and stir well.

Bake for about 30 minutes. Serve hot.