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Tilapia with Olive Gremolata
and warm mustard sweet potatoes and green beans

Active: 40 minTotal: 40 min

Tilapia fillets get a fresh finish from herb and olive gremolata. Sweet potatoes and green beans baked alongside the fish make this a classic "sheet pan dinner."



Olive Gremolata:
  • Parsley - 1 cup, leaves torn
  • Garlic - 1 clove, peeled
  • Lemon zest - 1/2 tsp
  • Lemon juice - 1 tsp
  • Olives, any mix of pitted black and green - 1/2 cup
  • Oil, olive - 3 Tbsp
Lemon Baked Tilapia:
  • Lemons - 1, sliced
  • Tilapia (sub any white fish, like flounder or halibut) - 1 lb
  • Olive gremolata (ingredients listed separately) - ~1/4 cup
Warm Mustard Potatoes and Green Beans:
  • Potatoes, sweet - 1 lb, cubed
  • Green beans - 12 oz, trimmed
  • Oil, cooking - 1 Tbsp
  • Mustard, Dijon (use whole grain mustard if you have it) - 3 tsp
  • Honey - 1 tsp
  • Oregano, dried - 1 tsp

Nutrition Facts

Serving Size: 1 serving
Servings Per Recipe 4
Amount Per Serving
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% Daily Value
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  1. Pre-cook potatoes - Cube potatoes and place in a microwave-safe bowl. Cover with wet paper towel and microwave on high to soften slightly (they'll finish cooking in the oven), ~3 minutes. (Can be done up to 3 days ahead)
  2. Make gremolata - Tear parsley leaves, discarding stems. Peel garlic. Combine parsley, garlic, lemon zest and juice, olives and olive oil (the portion for gremolata) in a food processor (alternatively, you can finely chop all ingredients by hand and then mix with olive oil). Pulse or chop until all ingredients are in very small, even pieces. (Can be done up to 5 days ahead)
  3. Green beans / Lemons (for the fish) - Prep as directed and store separately. (Can be done up to 5 days ahead)
  4. Tilapia - Rinse and pat dry with paper towels. Season with some salt and pepper.


  1. Heat oven to 400F / 204C.
  2. While oven heats, whisk together cooking oil, mustard, honey and oregano. Toss with green beans and pre-cooked potatoes. Season with some salt and pepper. Spread on a sheet pan and set aside while you prepare tilapia.
  3. Brush a second sheet pan with some oil and spread tilapia on top. Season tilapia with salt and pepper and top with lemon slices.
  4. Transfer both sheet pans to heated oven and bake until green beans are tender and fish is cooked through, 10 to 12 minutes. (Vegetables and fish should finish cooking at about the same time.)
  5. Discard lemon slices and top tilapia with gremolata. Enjoy with vegetables on the side.

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This meal has 37 reviews

Tilapia really needed something more. The gremolata was interesting though- I would like to see that used again.

By: Bradley
Posted: Sep 15, 2016
Diet: Original

Ended up with a lot of the olive topping left over - suggestions?

By: Joy
Posted: Sep 14, 2016
Diet: Original

I really liked the Gremolata but not a huge fan of the potato and green beans. Next time I would blanch the green beans before baking because they were still too crunchy for me. Also, would add some mustard seeds and toss the potato and green beans with the dressing after it bakes because I couldn't really taste the mustard on the veggies.

By: Frank
Posted: Sep 14, 2016
Diet: Original

I loved the potatoes and green beans done this way, I wasn't crazy about the gremolata. It was fun to try though!

By: Amanda
Posted: Sep 14, 2016
Diet: Original

I made with salmon. Amazing!

By: Megan
Posted: Sep 14, 2016
Diet: Gluten-free

It helps that my spouse did the actual cooking, but it was delicious. Definitely make the Gremolata a few days early so the flavours mix, and I added more lemon - double.

By: Cassie
Posted: Sep 14, 2016
Diet: Original