Tuna Mornay

A classic Australian comfort-food hot dish.

We made this low-carb and the ingredients we used are below in the recipe—with an affiliate link to keep this site running.

Pasta & Filling

  • 12 oz pasta (Aviate Keto Pasta Rotini)
  • 15 oz canned tuna (about two 5–7 oz cans, drained)
  • 14 oz (frozen) peas
  • 3 cloves garlic, minced
  • 3 tbsp butter
  • 4 tbsp Fiber Gourmet Low Net Carb Flour Blend
  • 4 cups milk (substitute 1 cup whipping cream for extra creaminess)
  • 1 cube chicken or vegetable bouillon
  • ½ tsp dry mustard powder
  • ½ cup grated parmesan cheese
  • Optional: ½ tsp onion powder + ½ tsp garlic powder

Crunchy Topping

  • 2 tbsp butter, melted
  • ½ cup breadcrumbs (Cooper’s Crumbs)
  • ¼ cup grated parmesan
  • Pinch of Celtic sea salt

Instructions

  1. Preheat Set oven to 350°F.
  2. Cook pasta — Lupini pasta cooks quickly with lots of foam. At three minutes it’s still stiff and you want it a little stiff because it will bake in a cream sauce for 25 – 30 minutes. Then drain.
  3. Make the creamy mornay sauce.
  • Melt 3 tbsp butter in a pot.
  • Crush up the bouillon cube in the melted butter
  • Add garlic and cook 30 seconds.
  • Add 4 tbsp flour and stir for 1 minute.
  • Slowly whisk in 4 cups milk (or 3 cups milk + 1 cup cream) until smooth.
  • Add mustard powder, and optional onion/garlic powder.
  • Simmer until thick enough to coat a spoon.
    Note: This flour sometimes resists thickening — add ½ tsp Glucomannan powder if needed.
  • Stir in ½ cup parmesan.

Combine

  • Add pasta
  • Add tuna (flake gently)
  • Add peas
  • Pours sauce over and fold together

Topping

  • 2 tbsp melted butter
  • ½ cup panko
  • ¼ cup parmesan
  • Pinch of salt

Bake

In an oven safe casserole dish at 350° with the top on for 15 minutes, then 10 to 15 minutes with the top off. Keep checking. You’re looking for a golden top over bubbling sauce.

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