Prepare the brownies according to the directions on the box. Be sure to use a 9x13 baking pan.

Once brownies are baked, allow the brownies to completely cool before cutting into the triangles.

Carefully transfer the brownies from the pan to a large cutting board.

Evenly cut the brownies into 3 equal horizontal sections.

Cut 4 diagonal sections to make a diamond pattern.

Then cut the diamonds in half. This should give you 18 full-shaped triangles.

Line a baking sheet with parchment paper.

Transfer the triangles to the prepared baking sheet.

Using an offset spatula, neatly ice the halved diamonds.

Place an M&M at the bottom of one of the triangle ends for the nose.

Place 2 of the candy eyeballs in the center of the triangle.

Then place 1 pretzel “antler” on the remaining 2 triangle points.

Another option is to use a heart-shaped cookie cutter. Beginning on the top edge of the brownies, and working toward the opposite end, cut out the hearts.

Carefully frost the heart-shaped brownies with the chocolate frosting.

Just above the point of the heart, place the brown or red M&M for the nose

Place the eyes in the center of the heart.

Just before serving, place the antlers.