Halloween is one of my favorite holidays, and entertaining is one of my favorite things to do. My entire family loves these cute apps, especially my kids, which makes the recipe extra-special. —Rachel Ruiz, Hurlburt Fld, Florida
Preheat oven to 350°. In a large skillet, cook beef over medium heat 6-8 minutes or until no longer pink, breaking into crumbles; drain.
In a large bowl, combine beans, taco seasoning and salsa. Stir in beef, cheddar cheese and 1/4 cup olives.
On a lightly floured surface, unroll 1 pizza crust; cut into 25 circles with a 2-in. biscuit or round cookie cutter. Repeat with remaining pizza dough. Reroll scraps to form 50 balls.
Place 1 heaping tablespoon beef mixture on the center of half of the circles. Top with remaining circles; pinch edges to seal. Place on parchment-lined baking sheets; gently shape into ghosts. Brush with egg whites; press 2 dough balls into sides to form arms. Sprinkle with Monterey Jack cheese; top each with sliced olives for the eyes and mouths.
Bake 15-20 minutes or until golden brown and cheese is melted.