Slice the whole-grain bagels in half and place them on a baking sheet. Toast in a preheated oven at 350°F (175°C) for about 5-7 minutes until lightly golden and warm.

While the bagels are toasting, scoop and mash the ripe avocado in a bowl until smooth, seasoning with a pinch of salt if desired.

Once toasted, spread a generous layer of mashed avocado on each bagel half to enhance visual appeal and help toppings stick.

Spread a thin layer of cream cheese or hummus over the avocado to provide a creamy element and make decorations stand out.

Place cucumber slices on the bagel halves to mimic eyes, using black olives for the pupils.

Add halved cherry tomatoes or sliced bell peppers for color and decorative accents.

Sprinkle edible googly eyes onto the bagels to enhance their mischievous appeal.

Arrange the Monster Bagels on a spooky-themed platter and serve immediately.