In a baking dish, place the onions and portobello, drenching them with olive oil, honey, salt, and pepper. Put the baking dish in the oven and remove it 20 minutes later.
In a hot skillet, melt a good amount of butter and add the tilapia, seasoning with salt and pepper. While it cooks, spoon the leftover butter over it to help it brown; the fillet will be ready in about 4 minutes per side.
In a bowl, mix chopped mint leaves, whey, salt, and pepper.
On a plate, create a bed with the garnish in the baking dish and place the fillet on top, drenching it with the mint whey.
Nutritional Information
* * Information per 100g serving, percentage of daily values based on a 2,000 calorie diet.
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