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Healthy Green Bean Casserole

  • Author: Serena Ball
  • Yield: About 6


Fresh mushrooms pack a mushroomy punch without any artificial flavors. This white sauce takes only about 5 minutes and thickens beautifully to coat your fresh green beans.


Units Scale
  • 1 1/2 pounds green beans, trimmed
  • 1 tablespoon + 2 teaspoons extra virgin olive oil
  • 1 tablespoon butter
  • 1/3 cup finely chopped onion
  • 1/4 teaspoon salt
  • Fresh ground pepper
  • 1/2 teaspoon dried thyme
  • 2 packages (8 oz) cremini mushrooms, sliced
  • 2 tablespoons whole wheat flour
  • 2 tablespoons all purpose flour
  • 2 cups 1% milk
  • 1/3 cup caramelized onions, warmed


  1. Add green beans to large pot of boiling water. Cook about 7 minutes until tender crisp. Immediately drain in colander and rinse with very cold water.
  2. Heat 1 tablespoon oil and butter in large non-stick skillet. Saute onion about 6 minutes until tender. Add additional 2 teaspoons oil and heat.
  3. Stir in mushrooms, salt, pepper and thyme; saute 8 minutes until mushrooms are tender.
  4. Add flour and cook 2 minutes, stirring, then slowly add milk while stirring. Heat to boiling and cook about 3 minutes or until thickened. Add green beans and stir carefully to coat.
  5. Pour into serving dish (or oven-proof casserole dish if you plan to warm in the oven before serving) and top with caramelized onions.