In a square tupperware (sandwich size) or any other heat proof dish you own, add all of the English muffin ingredients. Mix really well with a small whisk until smooth.
Add the tupperware to the microwave and heat 3 minutes at 600W. After 3 minutes, if the center is still raw, add another 30 seconds until the center is completely cooked.
Take out of the microwave and let it cool down a bit. Flip the tupperware over and take the microwaved bread out. With a bread knife, cut the square into two horizontally. Cut the two slices into cubes of your desired size. Add the cubes to a bowl. Mince the garlic cloves and the parsley. In a small bowl, add the butter. Put it in the microwave and heat until melted.
Add the parsley, garlic and salt to the melted butter. Mix. Pour the butter all over the croutons and carefully mix with a spoon. You want to try and coat all of the croutons with the melted butter and seasonings.
Add the croutons to an oven tray and make sure they're not piled up over one another. Add to an oven or toaster oven at 180C/350F and bake for 12-15 minutes, until golden brown.
Take the tray out of the oven and let the croutons cool down completely before serving them. You can then add the parmesan if you want to use some!