A lower-calorie way to make Tuna Pasta Bake
Tuna Pasta Bake stays creamy when cauliflower replaces most of the roux
Tuna, pasta, peas and a cauliflower-milk sauce create a bubbling Australian family bake for roughly 465 calories per square.
A lighter tuna pasta bake often turns dry because both cheese and white sauce are reduced at once. Here cauliflower is cooked directly in milk and blended into the sauce, supplying body before a restrained amount of sharp cheddar is added off the heat. Firm pasta finishes in the dish, while tuna stays in broad flakes rather than disappearing into a dense casserole.
What changes—and what stays
From commonly 650–900 calories with butter roux and heavy cheese to 465 calories
Blend cauliflower into milk for the sauce, keep cheddar to 120 grams and stop the pasta three minutes before package time. Sharp cheddar, Dijon and lemon zest give the mild sauce definition. Keeping tuna in flakes and browning only a thin crumb top preserves contrast without extra fat.
| Part | Conventional | Lighter | Why |
|---|---|---|---|
| Core method | More added fat or a heavier proportion | Blend cauliflower into milk for the sauce, keep cheddar to 120 grams and stop the pasta three minutes before package time | Sharp cheddar, Dijon and lemon zest give the mild sauce definition. Keeping tuna in flakes and browning only a thin crumb top preserves contrast without extra fat. |
How the flavor stays
Sharp cheddar, Dijon and lemon zest give the mild sauce definition. Keeping tuna in flakes and browning only a thin crumb top preserves contrast without extra fat.
A cost rule that survives inflation
Canned tuna, frozen peas and cauliflower turn a smaller cheese block into six filling portions, and there is no cream or packet sauce to buy.
Ingredients for 6
Measure first; timing is part of how this recipe uses less fat.
- 360 gdry penne
- 425 gtuna in springwater— drained
- 500 gcauliflower florets
- 600 mllow-fat milk
- 250 gfrozen peas
- 120 gsharp cheddar
- 35 gpanko breadcrumbs
- 10 golive oil
- 15 gDijon mustard
Method
Each step includes heat, a visible cue, and a recovery.
Step 1 · follow the visible cue
Drain pasta while its centre is still chalky
Boil penne three minutes short of its packet time, reserve one cup of water and drain it immediately without rinsing.
Look for: A cut tube should show a firm pale core and feel distinctly too chewy to eat as finished pasta.
Step 2 · follow the visible cue
Turn cauliflower and milk into the sauce body
Simmer cauliflower in milk until it crushes easily, then blend with mustard, pepper and a little reserved pasta water until satin smooth.
Look for: The puree should coat a spoon evenly with no visible cauliflower grain or watery pool around the edge.
Step 3 · follow the visible cue
Fold gently so the tuna remains visible
Remove sauce from heat, melt in two-thirds of the cheddar, then fold through pasta, peas and large drained tuna flakes.
Look for: Tuna should remain in recognisable pieces and the sauce should look slightly loose enough for the pasta to absorb.
Step 4 · follow the visible cue
Use a shallow dish and a sparse crisp top
Spread in a shallow dish, combine panko with oil and remaining cheddar, and bake at 220°C until bubbling and gold, about fifteen minutes.
Look for: The edges should bubble, crumbs should be crisp and a centre pasta tube should be tender without collapsing.
Calories at the same serving size
209 kcal · 31% lower estimated
The estimate uses the listed ingredients divided into 6 servings. Brand labels, trimming, and the amount left in the pan can change the result.
Keep the leftovers in the same spirit
Cool promptly and refrigerate up to three days. Reheat covered with a spoonful of milk, then uncover briefly to restore the crumb surface.
Cool promptly and refrigerate up to three days. Reheat covered with a spoonful of milk, then uncover briefly to restore the crumb surface.
Frequently asked questions
Can I use tuna in oil?
Yes, but drain it thoroughly and expect a higher calorie result. Springwater tuna makes the measured oil and cheese easier to control.
Can this be assembled ahead?
Assemble the sauce and filling, chill separately from the crumbs, then add the topping just before baking.
- dry penne360 g
- tuna in springwater425 g
- cauliflower florets500 g
- low-fat milk600 ml
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Recipe development and nutrition review: CaloNote Editorial
This editorial recipe uses ingredient-level nutrition estimates and reviewed cooking principles. It is not represented as physically test-cooked, and nutrition is approximate.
Published and last reviewed: August 25, 2026
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