FOR CRUST:
COMBINE: flour, sugar, and salt in food processor. Add shortening (Cover and pulse until the mixture resembles coarse crumbs.
Pulse while adding Milk (1 tablespoon at a time). Until dough holds together when pressed into a ball.
Shape into 3 round disks.
Wrap in plastic wrap. Chill 30 minutes to up to 2 days.
FOR FILLING:
Heat shortening in large skillet over medium heat.
Add onion, Cook 7 minutes or until tender.
Stir in brown sugar, thyme and salt until evenly blended.
Stir in pumpkin, ricotta, and Parmesan cheese.
HEAT 1-inch deep vegetable oil to 350 degrees in large skillet over medium heat.
Divide dough into 12 equal pieces.
Roll each to a 6 inch circle on lightly floured surface.
Brush edges with water.
Spoon 1/4 cup pumpkin mixture onto each circle.
Fold dough in half to cover filling.
Press edges with fork to seal.
COOK empanadas in hot oil 4 to 5 minutes or until golden brown, turning halfway through cooking time.
Drain on paper towels.
Cool 10 minutes before serving.