In a blender, puree together the beans, egg, vinaigrette, cheese, and Italian seasoning; set aside.
Working in batches, so the wrappers don't dry out, lay out 6 to 8 wonton wrappers. Place 1/2 tablespoon of bean mixture in the center of each. Moisten 2 connecting edges of the wonton wrapper with your finger dipped in water.
Fold wrapper in half to form a triangle. Press edges together to seal. Repeat with remaining wonton wrappers and filling.
Meanwhile, bring a large pot of salted water to a low boil.
For the sauce:
Melt butter in a large skillet over medium-high heat. Cook until it begins to brown and have a nutty aroma. Turn off heat and stir in capers and Italian seasoning.
Working in batches, cook ravioli in boiling salted water until just tender, about 3 minutes. Using slotted spoon, transfer ravioli to hot butter sauce. Add parsley to pan. Use a spoon to coat ravioli with sauce. Transfer to plates and add salt.