Give and Go Prepared Foods Corp, a Canadian maker of thaw-and-serve sweet baked goods such as Two-Bite Brownies, is exploring a sale it hopes could value it at around C$550 million , according to people familiar with the matter. The Toronto based-company's owner, OMERS Private Equity, the buyout arm of the Ontario Municipal Employees Retirement System, has held talks with investment banks in recent weeks to appoint a financial adviser to run an auction or initial public offering for the company, the people said.