Prepare Bacon: Cook the bacon until crispy, either in a skillet or the oven. Let cool and crumble into small pieces.
Make the Filling: In a medium bowl, mash the diced avocado with the softened cream cheese until smooth. Stir in lime juice, garlic powder, salt, and black pepper. Mix well to combine.
Assemble the Bites: Spoon the avocado and cream cheese mixture into the mini phyllo pastry cups or onto crackers. Top each bite with a sprinkle of shredded cheddar cheese and crumbled bacon.
Optional Garnish: Add a small sprig of cilantro or parsley for a fresh touch.
Serve: Arrange the bites on a serving platter and serve immediately.