Add the ground beef, onions and peppers to a skillet over medium high heat. Saute until the meat is browned and vegetables have softened. Drain the excess grease, and lower the heat to medium.
Stir in the garlic, tomato paste, chili powder, cumin, jalapeno, tomatoes and salt and pepper to taste. Saute for 2 minutes.
Pour in the beef broth, and simmer until about ½ of the liquid has been absorbed.
In a pot over medium heat, melt 2 tablespoons of butter.
Stir the minced garlic into the butter, and saute for 30 seconds.
Pour in the heavy whipping cream, and simmer until thickened.
Whisk in the cheese, and stir until completely melted.
Pour the cheese sauce over the cooked cauliflower in a mixing bowl, and stir until well combined.
Add the mac and cheese mixture into the chili skillet, and stir to combine well before serving.