Preheat the oven to 390 degrees F.
Slice turkey into 1 - 1.5 inch strips.
Place the sprouts on a baking tray lined with greaseproof paper. Toss with olive oil, salt and pepper and roast for about 25 minutes until crispy.
Mix egg, mayo, Dijon, cajun seasoning, salt and pepper (and optional herbs if desired) in a bowl. Add turkey strips and allow to marinade for at least 30 mins, or overnight covered in the fridge.
Add whey to a clean plate. When ready to fry, cover 2 tenders at a time with whey. Don’t do in big batches as the egg will just absorb all the whey. Do this when ready to fry each batch.
Place the oil in a 3 inch deep pan or deep fryer. Heat oil to 320 - 330 F (checking the temperature with a meat thermometer. See top tips above on why the temperature of the oil is important.)
Add 2 - 3 tenders to the hot oil at a time and cook for about 4 minutes, or until the batter is golden and the turkey cooked through. Slice one open to check. Repeat for all the remaining tenders.
To make the dip, mix Dijon with mayo in a small bowl and serve with Keto Southern Fried Turkey Tenders with roasted sprouts.
Storage: Airtight container in the fridge for 3 days or freezer for 2 months.