1.Bring a medium saucepan of water to boil. Place jalapeno peppers in the water 10 to 15 minutes, until just tender. Drain and cool.
2.Blot interiors of the jalapeno peppers dry with a paper towel.
3.Combine cream cheese and raspberry preserves together; mix until smooth. Fill each jalapeno pepper with some of the cream cheese mixture, but do not overstuff.
4.In a small bowl, whisk together eggs, 1/4 ts salt and vegetable oil. In another small bowl, mix remaining salt, and flour. Place crushed cornflakes in a third small bowl.
5.One at a time, dip the stuffed peppers into the egg mixture, the flour mixture, the egg mixture again, and finally the cornflakes crumbs. Place coated peppers in a medium dish. Freeze for 1-2 hours.
6.Heat oil in a large, deep skillet over medium high heat (can also use a deep fryer). Fry the frozen peppers 3-4 minutes each, until golden brown. Drain on paper towels and sprinkle with powered sugar. Serve warm.