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Tray bake mistakes: 5 simple things everyone gets wrong 

Don't settle for soggy veg.

There’s no denying the magic of a tray bake recipe.

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But not all tray bakes are created equal. Do it wrong, and you’ll end up with soggy veg and overcooked chicken.

Jordyn Evans, Founder of Mingle Seasoning, is a self-confessed tray bake expert. He says: “Tray bakes are the ultimate midweek saviour. You can toss everything on one tray and let the oven do the hard work.”

The secret? Avoiding a few common mistakes. Steer clear of these slip-ups and you’ll be unstoppable in the kitchen with a sheet pan.

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Tray bake with meatballs
Parmesan meatballs with roasted sweet potato. Get the recipe.

Tray bake recipe mistakes

Mistake 1: Throwing everything in at once

It’s tempting to pile everything on the tray together, but different foods cook at different speeds. Nutritionist Edwina Ekins suggests keeping it simple with a “1, 2, 3” approach:

How can cooks manage different cooking times without following a recipe?
Just think 1, 2, 3.

  1. Start with hard veg (like potatoes or carrots) to create the base – 10 minutes cooking
  2. Next, add protein (adjust time as needed, depending on cut and size) – 15 minutes cooking
  3. For pre-cooked carbs, such as rice, pasta, or potatoes – 5–10 minutes

Smaller chunks will always cook faster; chicken and fish are quicker than beef, and seafood is lightning fast. To make it work, either cut everything to match or add ingredients to the tray in stages.

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Mistake 2: Forgetting to layer

Layering is everything. Start with dense veg like carrots or pumpkin, then add quicker-cooking ingredients like zucchini or beans halfway through. Jordyn explains: “That way, everything finishes roasting together, without the crunch or the mush in the wrong places.”

Mistake 3: Overcrowding the pan

Overfilling your tray is the fastest way to ruin a tray bake. Instead of crisp, golden edges, everything ends up steaming. Jordyn’s rule: “Give your food space to breathe and crisp up.”

Mistake 4: Skimping on seasoning

If your tray bakes taste a little flat, shake things up. Season your protein one way and your vegetables another. Think: chicken with Citrus Pepper, veggies with Dill and Garlic: same tray, two layers of flavour.

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Mistake 5: Adding sauces and glazes too early

Sauces and glazes can take a tray bake from good to great, but timing is crucial. 

“Anything with honey or soy will caramelise beautifully, but if it’s added too early, it can burn,” says Jordyn.

“Add those glazes in the last ten minutes for sticky, golden chicken or tofu. Creamy yoghurt mixed with Mingle Dill and Garlic can go on fish from the start and protect it while it bakes.”

Formula for a simple weeknight traybake

Jordyn offers his foolproof formula for a simple traybake meal.

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“Keep it simple,” he says. “One protein, two or three vegetables, a drizzle of oil, and a generous shake of seasoning. Roast hot and fast, then finish with a drizzle of lemon juice.” 

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