In a bowl, stir egg whites with a splash of water and the oregano. Stir in oats, feta and green onions. Mix in turkey. With wet hands, divide into 8 portions; press into 8 greased cups in a muffin pan, flattening tops.
In a food processor, blend red peppers with vinegar and honey; spread a little on each 'loaf.'
Bake until instant-read thermometer inserted into centres is at 160ºF, about 15 minutes.
Meanwhile, in a skillet, heat oil over medium-high; sauté garlic until light golden, about 10 seconds. Stir in spinach until wilted, 2 to 3 minutes. Divide among 4 plates, and top each with 2 loaves and remaining red-pepper sauce.
Per serving: 280 calories, 26 g protein, 10 g fat (4 g saturated fat), 17 g carbohydrates, 4 g fibre, 79 mg cholesterol, 265 mg sodium.