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White Cheddar Stuffed Mushrooms

White Cheddar Stuffed Mushrooms are an easy make-ahead appetizer idea! They taste just like the Longhorn restaurant with a golden Parmesan crusted topping and flavorful white sauce.

Prep Time20 minutes
Cook Time20 minutes
Total Time40 minutes
Course: Appetizer
Cuisine: American, Italian
Servings: 24 mushrooms
Calories: 121kcal
Author: Stephanie

Ingredients

Parmesan Panko Mushrooms

  • 24 White Button mushrooms or baby portobello
  • 1 ½ cups Herb Pub Cheese see notes
  • ½ cup finely grated Parmesan cheese
  • 3 slices provolone cheese roughly chopped
  • 2 Tablespoons half and half
  • ½ cup Panko breadcrumbs

White Cheddar Sauce- makes 1 cup

  • 1 cup white cheddar cheese toss in flour room temp
  • 1 Tablespoon flour optional
  • ¼ cup half and half
  • 1/8 cup dry white wine
  • 1/4 teaspoon Worcestershire sauce
  • 1/8 teaspoon dry mustard
  • 1 dash pepper
  • ½ cup mayonnaise can sub sour cream

Instructions

Preparing the White Cheddar Sauce

  • Grate the White Cheddar cheese and set it aside to let it come to room temperature. Toss in 1 Tablespoon of flour to help it melt smoothly into the white sauce.
  • Combine the half and half, white wine, Worcestershire sauce, dry mustard, pepper, and mayo or sour cream.
  • Set aside until you put the mushrooms in the oven.
  • Heat the mixture in a double boiler over simmering water for 15 minutes, stirring occasionally. (You can create a makeshift one at home by setting a metal or glass bowl over a small saucepan.)
  • Gradually sprinkle in the grated cheddar and stir until well combined. Remove from heat.
  • For Serving: You can spread the sauce onto a serving plate and add the mushrooms on top, (Longhorn Style), or you can lightly drizzle the sauce over the mushrooms prior to serving. You can also pour the sauce into ramekins and offer it as a dipping option with the mushrooms. Just include forks if you choose this option.

Making the Stuffed Mushrooms

  • Preheat the oven to 375 degrees F.
  • Wipe the mushrooms with a damp paper towel to remove any dirt.
  • Use a paring knife to trace around the stem, then gently pull it out. (Dice and freeze the stems for homemade stock!)
  • Stuff each mushroom with the herb pub cheese until it’s almost to the top.
  • Combine the grated Parmesan, roughly chopped Provolone, and half and half. Microwave for 25 seconds, then stir in the panko. Let it cool.
  • The cheese mixture will harden but this makes it easier to top the mushrooms with it. Use your hands to evenly top each mushroom with the mixture.
  • Pro Tip: Be careful not to over-stuff them. The filling can bubble up slightly as it bakes and you don't want the filling to overflow onto the baking sheet.
  • Place the mushrooms on a foil or parchment paper lined baking sheet.
  • Bake for 15 minutes or so, until the tops are golden and the bottoms are still firm enough to hold their shape. Halfway through, the mushrooms in the middle of the pan may need to be rotated with ones on the outside for even browning.
  • Let the mushrooms sit for 5 minutes prior to serving. This allows them to firm up but also to cool slightly as they get very hot on the inside.

Notes

Pro Tips:
Make Ahead Method: These mushrooms can be assembled and refrigerated up to 2 days ahead of time. Let them sit out for 10 minutes prior to baking.
This recipe is for 24 mushrooms, nutrition facts are per mushroom and include the White Cheddar Sauce.

Nutrition

Calories: 121kcal | Carbohydrates: 3g | Protein: 5g | Fat: 10g | Saturated Fat: 5g | Cholesterol: 21mg | Sodium: 201mg | Potassium: 82mg | Fiber: 1g | Sugar: 1g | Vitamin A: 245IU | Vitamin C: 1mg | Calcium: 109mg | Iron: 1mg