Preheat your oven to 350°F (175°C) and prepare a baking sheet with parchment paper or leave it ungreased.

In a large mixing bowl, cream together 1 cup of softened margarine and 1 cup of white sugar until light and fluffy, for about 2-3 minutes.

Add 2 large eggs one at a time, mixing until fully incorporated, then add 1 teaspoon of vanilla extract and blend until smooth.

In another bowl, whisk together 2.5 cups of all-purpose flour, 2 teaspoons of baking powder, and 0.5 teaspoon of salt, then fold this mixture into the wet ingredients until just combined.

Scoop portions of the cookie dough, roll them into 1-inch balls, and place them on the baking sheet, flatting slightly if desired.

Generously sprinkle the cookie dough balls with red and green sprinkles before baking.

Bake for 8-10 minutes, aiming for set edges and soft centers.

Let the cookies cool on the baking sheets for a few minutes before transferring to wire racks to cool completely.