His review was full of fudge-covered praise that felt insincere.

fudge 是一种软糖，这里指"糖霜"或"甜腻的糖衣"。 covered 是动词 cover 的过去分词，意思是"覆盖、包裹"。 fudge-covered 字面意思是"被糖霜覆盖的"，在这里比喻"过分甜腻的、刻意美化的"，用来形容那些表面好听但缺乏实质内容的赞美。