Step 1

In medium bowl, mix flour, baking cocoa, baking powder and salt; set aside.

Step 2

In large bowl, beat granulated sugar, oil and eggs with whisk until well mixed. Beat in vanilla and peppermint extract.

Step 3

Stir dry ingredients into wet ingredients just until combined. Cover bowl with plastic wrap, and refrigerate at least 2 hours

Step 4

Heat oven to 350°F (180°C). Line cookie sheets with cooking parchment paper. Place icing sugar in small bowl. Shape dough into tablespoon-size balls; roll in icing sugar. Place on cookie sheets about 1 1/2 inches (4 cm) apart.

Step 5

Bake 10 to 12 minutes, until cookies crackle and dough doesn’t look raw. When cookies are done, immediately place a chocolate candy in centre of each cookie, and press lightly. Cool on cookie sheet 2 minutes. Remove to cooling rack; cool completely until candy is set.