Wash the green apples thoroughly under cold water and cut each apple into quarters, removing the core. Create a V-shape in the center of each quarter for the monster's mouth.

Spread a generous layer of creamy peanut butter into the V-shaped mouth of each apple piece to hold everything together.

Press several pumpkin or sunflower seeds along the edges of the mouth to create the monster's teeth.

Cut small triangular pieces of cheese and place them into the apple's mouth to resemble playful teeth.

Attach the candy eyes onto each apple slice using the remaining peanut butter.

Serve immediately for the best taste and presentation.