What is the issue in the sentence: "Lasagna is a delicious comfort food, it can be made healthier with the addition of hearty vegetables"?

The sentence "Lasagna is a delicious comfort food, it can be made healthier with the addition of hearty vegetables" contains a grammatical issue related to the use of a comma to separate two independent clauses. This error arises because the sentence includes two complete thoughts that are improperly joined by just a comma, leading to what's known as a comma splice.

To correct this issue, a conjunction could be added to properly link the clauses, or the sentence could be restructured into two separate sentences or connected more appropriately with a semicolon. Thus, identifying the problem as an excessive comma acknowledges that the punctuation does not correctly follow the rules for linking independent clauses.