Gratin of Walleye with Tomato and Zucchini

This recipe and photography were provided courtesy of local cookbook author and chef, Carla Snyder. Learn more about Carla and discover her recipes at or in her cookbook, One Pan Whole Family. 

This homey gratin starts out with a little potato followed by layers of grated zucchini, a touch of cream, walleye, tomato and a buttery panko topping. Now is the time to use up some of that zucchini and tomatoes your neighbor with the garden keeps leaving on your doorstep. Simple, delicious and fast, this is a recipe for supper success.

It’s that easy: If you can’t find walleye, go ahead and use perch, haddock, cod, tilapia or any other firm-fleshed white fish. It will taste amazing.

Gratin of Walleye with Tomato and Zucchini

Start to finish: 45 minutes
Hands on time: 25 minutes


  • 6 new potatoes
  • 2 cloves garlic
  • 2 tablespoons olive oil
  • 1 teaspoon salt plus more for sprinkling
  • Freshly ground black pepper
  • 3 zucchini, about 7-in each
  • 2 large tomato
  • 2/3 cup panko
  • 1 tablespoon butter, melted
  • 1 1/2-lb walleye
  • 1/3 cup heavy cream
  • 1 teaspoon Italian seasoning


  1. Preheat the oven to 425°
  2. On a large cutting board, halve and thinly slice the potatoes and mince the garlic.
    Heat a 12-in skillet over medium-high heat and add the oil. When the oil shimmers, add the potatoes, garlic, 1/4 teaspoon salt and a few grinds of pepper. Stir to mix well and sauté for about 3 minutes or until the vegetables are good and hot. Transfer the potatoes to the oven and roast for 10 minutes.
  3. While the potatoes cook, grate the zucchini into a medium bowl and slice the tomato.
  4. In a small bowl combine the panko and butter and measure out the cream.
  5. Sprinkle the fish with 1/2 teaspoon salt and a few grinds of pepper.
  6. Remove the potatoes from the oven and stir in the zucchini, remaining 1/4 teaspoon salt, a few grinds of pepper and the Italian seasoning. Stir to mix well and cook on medium-high heat for 4 minutes or until hot. Lay the seasoned fish on top and then layer the tomatoes on top of the fish along with another sprinkle of salt and pepper. Pour the cream into the pan in a couple of spots so that it doesn’t wash the seasoning off the fish and sprinkle the panko mixture over the top of the tomatoes.
  7. Bake for about 20 minutes, uncovered or until the fish flakes and the topping is golden.
  8. Divide the gratin among heated plates and serve hot.

Extra Hungry Kids? Heat up some Texas toast and serve the vegetables and fish on top.

Adult Taste Buds? Spread half the buttered panko over half the gratin then mix up a tablespoon of prepared horseradish with the remaining panko mixture and spread over the adult portions.
In the glass: Your favorite Chardonnay is a great choice for this rich meal. If you haven’t tried an unoaked Chardonnay, this is a good time to pick up a bottle from Kim Crawford or Estancia.

For more recipes from this series on how to cook Walleye, visit the index here

Click Here to Print the Recipe for Gratin of Walleye with Tomato and Zucchini

Carla Snyder
Posted by: Carla Snyder
Carla has spent the past 30 years in the food world as a caterer, artisan baker, cooking school teacher, food writer and author of 6 cook books including the James Beard nominated Big Book of Appetizers. Her passion is sharing fresh, cooked-from-scratch weeknight meals that cut prep time and practically eliminate that nightly sink full of dishes. Look for Carla on Facebook, Twitter (carlacooks), Pinterest and at where she blogs about everything from cooking for two to easy weekend entertaining for a crowd.

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