Ingredients
Method
- Brown the beef and onion for 9 minutes until the beef reaches 160°F, drain, and transfer to a 6-quart crockpot.
- Add the potatoes, carrots, broth, mustard, salt and pepper and cook on low for 6 hours until the potatoes are tender.
- Mash about 2 cups of potatoes in the crock.
- Mix the butter and flour into a paste, whisk it into the milk, and stir it into the soup for 20 minutes on high.
- Switch off the heat and add the cheddar by handfuls, stirring each addition smooth.