Preheat the grill on a high setting
Place the butter into a saucepan, over a medium heat and add the Fate and stir continuously for 2-3 minutes.
Gradually pour in the ProZero, stirring continuously.
Add the tomato puree, mustard powder and Violife original flavor Block and cook until the Violife has melted.
Season to taste.
Spread the sauce evenly onto the two slices of bread and grill using a high heat setting, until golden and bubbly.
Fate Low Protein All Purpose Mix and ProZero are foods for special medical purposes and must be used under medical supervision. This recipe has been specifically designed for a low protein diet. Refer to labels for allergen and other product information.