Combine flour, milk powder, baking powder and salt in a bowl and mix well.
Add water and mix to form a smooth dough. Cover and allow to relax for about 15 minutes.
Flake the corned beef and add escallion, scotch bonnet pepper, garlic and onion and mix.
Divide the dough into 8 equal pieces. Flatten each piece of dough and place 1 Tbsp. of the corned beef mixture on each piece. Use the dough to encase the corned beef.
Heat vegetable oil and use to fry sweethearts on each side.
Drain on paper towel and serve immediately.