1Cut cauliflower into small pieces. Cook in boiling water for about 6 minutes, or until well done. Drain well; do not let cool and pat cooked cauliflower very dry between several layers of paper towels.
In a bowl with an immersion blender, or in a food processor, puree the hot cauliflower with the cream cheese, parmesan, garlic, butter and salt until almost smooth.
2In a large skillet brown ground beef. Add the onion and garlic, cooking until tender. Stir in vegetables, worcestershire sauce, seasoned salt and beef broth. Bring to a boil. Reduce to low heat, stir in heavy cream. Cover and simmer until vegetables are cooked about 8 minutes
3Preheat oven to 350F
4Pour beef mixture into greased 9 x 13 baking dish.
Spread cauliflower mixture over the top.
Sprinkle with cheddar cheese and chives.
Bake for 10 minutes or until cheese is melted.