Preheat oven to 425 degrees.
Lay sliced French bread cut side up onto a baking sheet.
In a small bowl combine oil, cumin, and garlic powder and stir.
Brush the seasoned oil mixture onto the cut side of both bread halves with a pastry brush.
Spread salsa evenly on top of bread halves.
Sprinkle the halves with the Mexican cheese and top with crumbled Parmesan cheese.
Place into 425 degrees oven.
Bake 8 to 12 minutes, or until cheese is melted and bread is good and crusty.
While the bread is baking, prepare the relish.
In a medium size bowl, mix avocados, limejuice, cilantro, scallions, garlic, celery salt, and salt to taste and set aside.
Remove the bread from the oven.
Allow cooling a few minutes.
Using a serrated knife, slice bread halves across into 2-inch strips.
To serve put salsa bread strips on a nice plate or platter with avocado relish in a separate bowl.
Ready in 35 min.