。
She gave me a lot of food.
Literal
She [topic-は] me [to-に] lots food [object-を] gave.
たくさん is a quantity adverb that floats between the subject/object and the verb — here it modifies 食べ物 by simply preceding it. Compared with the syntactically equivalent 食べ物をたくさんくれた (numeric expression after the noun-particle pair), this fronted placement gives it slightly more prominence. Both are natural; native speakers tend to vary placement based on focus and rhythm. たくさん is one of the rare Japanese quantity words that can both attach directly to a noun (たくさんの食べ物 'lots of food') and float freely as an adverb.