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Tuna Stuffed Baked Potatoes (My Grandma's Recipe)

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A platter filled with Tuna Baked Potatoes

Tuna stuffed baked potatoes are twice-baked potato skins filled with a creamy mix of canned tuna and cream cheese, then topped with shredded cheddar and baked until golden and melty. The protein and fat in the filling work alongside the potato's carbs to create a balanced, satisfying meal rather than a blood sugar spike. Think of it as a tuna melt and a twice-baked potato in one!


Quick Look: Tuna Stuffed Potatoes Recipe

A comfort food dinner built for blood sugar balance, protein and fat working alongside the carbs.

🥔 Prep Time: 40 minutes
🔥 Cook Time: 20 minutes
⏲️ Total Time: 1 hour
🍽️ Servings: 12 halves (6 potatoes)
📊 Calories: ~290 per serving
💪 Protein: ~14g per serving
🌡️ Cook Method: Baked at 400F
🧀 Cheese Tip: Shred your own cheddar for the best melt
🥛 Hot Milk: Use hot, not cold. Cold milk makes the filling gummy
💚 Difficulty: Easy

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Grandma's Famous Recipe

My grandma made these famous in our family and my two boys squeal with happiness when they see these hit the dinner table at our house.

This is one of those divisive recipes. When I tell people about it, some folks go, "ooooh, that sounds right up my alley." Where others give me that stricken look that says, "no thank you."

My take is, don't knock it till ya tried it. If you dig a tuna noodle casserole, chances are you'll go for this, too. Same goes for my Tuna Pasta Salad.

Friends in the UK tell me this is essentially a tuna jacket potato, Same delicious idea, different name.

tuna baked potato with a bite taken out

How to Make Tuna Baked Potatoes

This recipe isn't at all difficult, but some parts of it take a little more effort than a quick and easy weeknight meal.

You start by roasting plain russet potatoes in the oven on a sheet tray with a wire rack at 400F for an hour until they're nice and soft. Be sure to prick the outside with a knife or a fork so that as they bake the steam has somewhere to escape.

After they're baked and have about 10 minutes to cool, slice them in half and scoop out the inside of the potato so that you're left with a bunch of skins.

baked potatoes on a wire rack out of the oven
Baked potatoes after being roasted for an hour at 400F
Potatoes with the insides taken out and skins left
Potato skins with the flash scooped out

Then you mix together the insides of the potato with canned tuna, celery salt, salt, cream cheese and hot milk. The hot milk is important because if it's cold milk, it will cause the potatoes to seize and you'll end up with gummy taters.

potato, cream cheese, tuna and celery salt in a bowl
Potato, tuna, cream cheese, celery salt, salt and hot milk go into the filling
tuna potato filling in a bowl
Potato and tuna filling mixed
tuna stuffed potatoes filled with filling
Filling added to the skins
potatoes filled with tuna and potato and topped with cheese ready to bake on a sheet tray
Topped with cheddar cheese

Finally you put the filling into the skins, top them with shredded cheddar cheese, and bake them for 15 to 20 minutes at 400F until the cheese gets nice and melty and the filling is piping hot.

Hot Tip! Shred Your Own Cheese

I highly recommend shredding your own cheese for this recipe so that you get the best melty factor. Pre-shredded cheese is treated with potato starch to help it from clumping in the package and will result in less than stellar results in your final potatoes.

What Kind of Tuna is Best for Tuna Baked Potatoes?

Not all canned tuna is created equal. I personally like a quality white albacore packed in water for this recipe and when I make tuna salad. My go to is from Wild Planet.

Tuna Baked Potato on a platter

Joanie's Balanced Bites for Blood Sugar Balance

The tuna, cream cheese, and cheddar in this recipe bring protein and fat that work to support the carbs from the potatoes, slowing digestion and moderating your glucose response.

To round out the meal, pair it up with some extra fiber like my Mushroom and Basil Salad, steamed broccoli, or any non-starchy veggie side.

And if you can get outside for a 10-minute walk after dinner, that post-meal movement is one of the most effective tools for keeping blood sugar stable. Your muscles absorb glucose directly during light activity.

This is also just one of those dinners that makes people genuinely happy, and that matters more than you might think. Emerging research suggests our psychological relationship with food affects glucose metabolism directly.

One Scientific Reports study found blood sugar responses were influenced more by what participants believed they were eating than what they actually consumed. Eating food that brings genuine satisfaction is a part of being human.

Browse more ➡️ Blood Sugar-Friendly Recipes

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Potato skin filled with tuna, cream cheese and topped with melted cheddar.

Tuna Stuffed Baked Potatoes with Cheddar

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 1 review
  • Author: Joanie Simon
  • Prep Time: 40 minutes
  • Cook Time: 20 minutes
  • Total Time: 1 hour
  • Yield: 12 halves
  • Category: entree
  • Method: baked
  • Cuisine: American
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Description

 

Tuna stuffed baked potatoes filled with a canned tuna and cream cheese mixture, topped with melty shredded cheddar. A protein-boosted, blood-sugar-friendly comfort food dinner the whole family will love.


Ingredients

  • 6 large russet potatoes
  • 6 oz full-fat cream cheese, softened
  • 10 oz (2 - 5 oz cans) tuna packed in water, drained *see note
  • ¼ tsp celery salt
  • 1 tsp salt
  • 1 cup hot milk *see note
  • 6 oz cheddar cheese, shredded


Instructions

  • Preheat the oven to 400F and wash 6 large russet potatoes, scrubbing the skins well and pricking the tops with a knife or a fork.
  • Place the clean potatoes on a baking sheet with a wire cooling rack set inside it so that the potatoes aren't resting on the bottom of the pan (helps with even cooking) and roast the potatoes in the oven for 1 hour. After an hour use a knife to test to see if the potatoes are cooked by poking one of the potatoes. If the knife goes in easily, your potatoes are done. If the potato still seems rather firm, continue to roast for another 10 minutes or until the potatoes are fully cooked.
  • While the potatoes are roasting, take the cream cheese out of the refrigerator and allow it to come to room temperature.
  • Once the potatoes are cooked, remove them from the oven and allow them to cool for 10 minutes.
  • Once the potatoes are cooled, slice them in half along the long edge of the potato and hollow out the interior of the potato, adding the scooped-out potato to a large mixing bowl. Repeat until all of your potatoes are halved and hollowed out, putting all the skins on a baking sheet.
  • In the bowl with the scooped-out potato, add 6 oz softened cream cheese, 10 oz tuna that's been drained, ¼ teaspoon celery salt, 1 teaspoon salt and 1 cup hot milk for the filling.
  • Using a spatula or a hand-mixer, mix together the filling until fairly smooth and all the ingredients are incorporated.
  • Spoon the filling equally into all of your potato skins, then top them all with shredded cheddar cheese.
  • Put the prepared tuna stuffed potatoes into the 400F oven for 15 to 20 minutes until the cheese is melty and the filling is cooked through.
  • Serve right away.

Notes

If using Kirkland brand tuna, that comes in slightly larger cans. Feel free to add in the extra tuna to the filling or enjoy the extra 2 oz of leftover tuna as a snack.

Heating the milk is essential! Adding cold milk will make your filling gummy and paste-like.  Hot milk interacts with the potato starches to make a light and fluffy filling. I microwave the milk in a heat-safe glass for 45 seconds so that it has steam rising off it, but it's not boiling. You're aiming for around 135F (57C).

Keep leftovers in the refrigerator for up to 4 days. Reheat in the microwave on high for 2 minutes.

Nutrition

  • Serving Size: 1 filled potato skin
  • Calories: 290
  • Sugar: 2.8 g
  • Sodium: 437.8 mg
  • Fat: 10.5 g
  • Carbohydrates: 35.6 g
  • Fiber: 2.4 g
  • Protein: 14.3 g
  • Cholesterol: 38.7 mg

Did you make this recipe?

Tag me @theglucosegourmet on Instagram. I'd love to see!

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About Joanie Simon

Joanie Simon is a lifelong food lover, health coach, and recipe developer who believes managing blood sugar and eating delicious food go hand in hand. Through The Glucose Gourmet, she shares gourmet comfort food recipes tested with her own CGM alongside strategies for sustainable wellness.

Comments

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  1. Wacky Steps says

    April 16, 2026 at 12:29 pm

    I like how this recipe keeps things simple but still focuses on balancing flavors and glucose impact, especially with the tuna and baked potato combo. It feels practical for everyday meals, even if dialing in portions might take a few Wacky Steps at first. I’ve tried similar combos before, and they’re surprisingly satisfying without feeling heavy.

    Reply
photo of Joanie Simon, author of The Glucose Gourmet

Hi, I'm Joanie

I teach food lovers how to get off the glucose rollercoaster and stabilize their energy without giving up the foods that bring them joy.

From viral cottage cheese pizza to sourdough bread, I use data-backed hacks to turn family favorites into metabolic wins.

More about me

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