Question

fix the adjective error (if one exists). homer simpsons brownies are even more amazinger than the ones my mom makes.

Explanation:

The adjective "amazing" follows the standard rule for comparative forms: since it is a multi-syllable word, its comparative is formed by adding "more" before the base adjective, not by modifying the end of the word. "Amazinger" is a non-standard, incorrect comparative form.

Answer:

Homer Simpson's brownies are even more amazing than the ones my mom makes.