Mouth Watering Crock Pot Beef Stew

1 1/2 lbs beef
1 large onion
3 whole carrots
2 medium potatoes
3 cans beef broth
1 small package of frozen mixed vegetables
1/4 cup flour
1/2 cup butter (1 stick)
1 packet onion soup mix

Cut beef into 3/4" to 1" squares. Slice carrots, quarter onions, cut potatoes into 1/2" squares.
Melt half of the butter in a skillet, lightly coat beef with flour, turn heat to high and sear beef. Remove from heat after searing. Place onions, carrots, potatoes into crock pot, adding broth. Add beef on top and sprinkle soup mix across beef. Cover, cook on low approximately 8 hours.
Turn crock pot to high and add frozen vegetables, stir in so they cook thoroughly. In saucepan, melt 1/4 cup butter. Add 1/4 cup flour stirring well. Add broth from crock pot until mix becomes thin. Pour back into crock pot and stir well.

Serves 2-3 hearty appetites