to "bite and bake to gold" is to cut corners and expect everything to turn out well. For example, when baking bread, you can eat ("bite") some of the bread dough, but still bake it "to gold" (golden brown) and having eaten it doesn't matter. usually people use this negatively- i.e."it's not something you can bite and bake to gold"- to essentially mean "don't cut corners".
"Hey, Dr. Bam, do you think I have to sanitize this scalpel?"
"Obviously you do, surgery isn't something you can just bite and bake to gold."