Make royal icing by combining powdered sugar, meringue powder, and water. Mix with electric mixer until matte and slightly thickened, about 2 minutes, adjusting water for consistency.

Transfer royal icing to a squeeze bottle or plastic bag with a cut corner.

Using the squeeze bottle, draw a center football stripe on whole almonds. Let icing harden 5-10 minutes.

Draw three stitches on each almond using royal icing and allow icing to harden completely.

Prepare green puppy chow: place 4 cups Chex cereal in a large plastic bag.

Melt green candy melts, vegetable oil, and peanut butter over low heat, stirring until smooth.

Pour melted chocolate mixture into the bag of cereal. Seal and shake to coat evenly.

Add 3/4 cup powdered sugar to the bag, reseal, and shake again. Add more powdered sugar if sticky.

Prepare brown puppy chow: place 4 cups Chex cereal in another large plastic bag.

Melt chocolate chips, vegetable oil, and peanut butter over low heat until smooth.

Pour melted chocolate into the bag of cereal. Seal and shake to coat evenly.

Add 3/4 cup powdered sugar to the bag, reseal, and shake again. Add more powdered sugar if sticky.

Combine green and brown puppy chow in a large bowl or serving tray.

Add decorative football almonds and M&Ms to the mixture.

Serve and enjoy the festive football snack.