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Brussel Sprout Gratin with Bacon Breadcrumbs

Brussels Sprout Gratin with Bacon Breadcrumbs

This delicious brussels sprouts recipe is perfect for Christmas dinner or any holiday meal!

Course Side Dish
Cuisine American
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 6 people
Author Amanda @ Old House to New Home


  • 3 lbs fresh brussels sprouts steamed and then sliced in half with core cut off as well
  • 1 lb bacon cooked
  • 1 cup gruyere cheese shredded
  • 1 cup gouda cheese shredded
  • 2 cups milk
  • 4 tbsp butter
  • 4 tbsp flour
  • 4 slices stale sour dough bread crusts removed and cut into chunks
  • 1 tsp salt plus more to taste
  • 1/2 tsp pepper plus more to taste
  • a pinch nutmeg


  1. Preheat oven to 375 degrees.

  2. In a small sauce pan, add your butter and let melt over medium heat. Once melted, add the flour and whisk to combine. Let cook for 1 minute, or until starting to brown. Add milk and whisk. Cook over medium heat until milk starts to boil and thicken. Stir often to prevent mixture from burning. Mixture should be thick enough to coat a spoon.

  3. Once thickened, reduce heat to low. Add nutmeg, half the salt and half the pepper. Stir to combine. Turn heat off and add both cheeses. Whisk to combine. Set mixture aside. 

  4. In the bowl of a blender of food processor, add your stale bread and 3/4 of the bacon. Pulse to combine, until you have small, chunky breadcrumb like pieces. 

  5. In a large mixing bowl, add your steamed sprouts, remaining pieces of bacon (broken in small pieces), salt and pepper. Stir to combine. 

  6. Add sprouts and bacon to a large casserole dish. Add cheese mixture and stir. Taste and add additional salt and pepper as desired. Top casserole dish with bacon breadcrumbs.

  7. Place in the oven and cook 30 minutes, or until cheese sauce is bubbling and breadcrumbs are golden brown. If they brown too quickly, cover with foil. Serve warm.