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Healthy Sloppy Joe Casserole
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4.37 from 33 votes

Cheesy Sloppy Joe Casserole (keto)

Sloppy joe covered mushroom casserole with Monterey jack cheese topping. Low-carb and keto friendly, a healthy and easy weeknight dinner idea.
Prep Time10 mins
Cook Time25 mins
Total Time35 mins
Course: Main Course
Cuisine: American
Keyword: Baked, healthy, keto, low carb, manwhich, supreme pizza casserole
Servings: 4
Calories: 264kcal
Author: Amber @ Low Carb Quick


  • 1 lb lean ground beef
  • 8 oz baby bella mushrooms chopped
  • 1/2 cup tomato sauce
  • 1 yellow onion diced
  • 1/2 large green bell pepper, diced finely
  • 2 tbsp Worcestershire sauce
  • 2 tbsp dijon mustard
  • 2 tbsp powdered erythritol
  • 1 tbsp xanthan gum (to thicken, optional)
  • 2 cups monterrey jack or pepper jack cheese


  • Preheat oven to 350º F. Remove stems from mushrooms and set aside.
  • Brown ground beef on med heat. Add all other ingredients, including mushrooms. Stir occasionally. Drain thoroughly.
  • Spray baking dish with non-stick spray. Add ground beef mixture.
  • Layer Monterey Jack cheese on casserole and bake for 15 minutes or until cheese is golden.



Calories: 264kcal | Carbohydrates: 8g | Protein: 37g | Fat: 7.6g | Saturated Fat: 2.7g | Cholesterol: 101mg | Sodium: 411mg | Fiber: 2.4g