Mock Shepherds Pie

1 lb ground beef
1 can petite diced tomatoes

1/2 onion, diced
1 t thyme
2 C vegetable broth
3 oz tomato paste
2 T Worcestershire sauce
Salt & Pepper, to taste
1 head cauliflower, cut into florets
1/2 stick butter
2 garlic cloves, minced
1/2 C heavy cream
1 C shredded cheese, divided

Preheat oven to 350°.
Brown ground beef in a heavy Dutch oven over medium high heat.
Add onion, tomato, thyme, broth, paste and sauce. Cook until it thickens, about 15 minutes.
While that cooks, steam cauliflower on stovetop or in microwave until soft.
In a saucepan, bring butter & garlic to a simmer and remove from heat.
Add cauliflower to butter mixture and mash cauliflower with a potato masher.
Add cream.
Using a stick blender, blend until smooth.
Add 1/3 C shredded cheese, stir.
Add salt & pepper, to taste and set aside.
When beef mixture is thick, remove from heat.
Spread cauliflower mixture over the top of the meat, evenly.
Sprinkle the remaining 2/3 C shredded cheese on top.
Cook in oven for 20 minutes then under broil for 1-2 minutes, make sure the cheese doesn't burn.
Serve.
Option: Sprinkle top with chopped parsley or chopped chives. 

NET CARBS PER SERVING: 10.66
SERVINGS: 6