Cedar Falls, Iowa (CNN) Hillary Clinton subtly charged Bernie Sanders with only offering voters with slogans and rhetoric, not concrete plans, on Tuesday night in Cedar Falls.

After laying out her plans on college affordability, clean energy and taxes, Clinton said that she puts her plans on her website and cites how she is going to pay for each plan to prove to voters that she isn't offering empty promises.

"I do want you to know that I am not just shouting slogans, I am not just engaging in rhetoric," Clinton said. "I have thought this through, I have a plan."

"I want you to understand because I don't think you can get what we need done in this election nor in the presidency unless you level with people. You tell them what you can do and then you let them then respond to it," she added.

The refrain was a shot against Sanders, who Clinton aides and advisers believe is promising pie-in-the-sky plans that he wouldn't be able to deliver on if he gets to the White House.

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