In a medium sized bowl, combine your flours and salt until well incorporated. Form a small well in the middle.
In a small cup, combine 3/4 cup plus 3 tablespoons water and 2 teaspoons olive oil. Mix quickly with a fork, then pour into the well in your flour mixture.
Slowly push the flour into the water/olive oil, mixing with a fork until the dough is too thick to stir.
Using your hands, knead the dough for about 5-8 minutes. Form the dough into a big ball, and cover in plastic wrap to prevent drying. Set aside and allow the dough to rest for 8-10 minutes.
Divide your dough into 2 equal parts. On a very lightly floured surface, roll (using either a rolling pin or a pasta roller) each half into a long rectangular piece (about 33 inches long (or longer) by 6 inches wide).
Using a butter knife, gently score one piece of rolled out dough into 24 squares (They will be roughly 2.5 - 3 inches on each side).
Now, pull out that mushroom filling that you have prepared. Place mounds (about 2 teaspoons in size) in the center of each ravioli square.
Now, keep a cup of water next to your dough, and wet your fingers. Using your fingers, Moisten the score lines of each ravioli square. This moistening will be the glue to hold your ravioli layers together.
Carefully place the second strip of rolled out dough on top of the first, and press down gently around each filling mound.
Cut each ravioli square with a knife, and use a fork to form ridges on each edge, if you prefer.
At this point, you can either put your ravioli on a tray and freeze or refrigerate them, or you can cook them immediately by placing them in salted boiling water for 6-8 minutes, or until they have been floating on the top of the boiling water for a minute or two.
Remove ravioli from boiling water with a slotted spoon, and place on a paper towel to drain for just a couple of minutes.
Drizzle some sauce over these babies, and I guarantee you that your sweetheart will be very impressed. :)