Slow Cooker French Onion Soup

  • 3 medium yellow onions, thinly sliced
  • 3 medium red onions, thinly sliced
  • 3 garlic cloves, minced
  • 4 T. butter
  • 2 T. balsamic vinegar
  • 2 T. brown sugar
  • 2 T. corn starch
  • 3 qt. beef, turkey, or chicken stock — I used homemade turkey stock
  • 2 tsp. dried thyme
  • 1/2 tsp. black pepper
  • Salt, to taste
  • French bread
  • Swiss cheese, sliced

Turn your slow cooker to HIGH, then add the sliced onions, minced garlic, butter, balsamic vinegar, and brown sugar; mix until combined. Cover and cook in the slow cooker for 60 minutes, stirring occasionally, until the onions are softened, sweet, and brown on the edges. Add the corn starch; stir thoroughly and let sit for 5 minutes. Add the stock, thyme, and pepper; turn the heat to LOW, cover and cook for 6-8 hours.

Before serving, cut the french bread into slices. Fill soup bowls to the top with the onion soup; cover the top of the bowl with a slice of bread and a couple of slices of cheese. Set the bowls under the broiler for 2-3 minutes, or until cheese is bubbly and golden brown. Be careful when serving as bowls will be hot!

  • Yields: 8-10 servings
  • Preparation Time: 7-9 hours (all but an hour of that doesn't require supervision)
Related Articles: