A previous version of this story incorrectly stated that the Grand Mac consisted of one 1/3-pound beef patty instead of two 1/6-pound patties. 

(MCD) - Get Report iconic Big Mac is about to get two new family members.

A McDonald's spokeswoman tells TheStreet the company has started testing a "Grand Mac" and "Mac Jr." in over 120 restaurants in the central Ohio and the Dallas areas. The Grand Mac, which will cost $4.89, is made with two 1/6-pound beef patties on a larger sesame seed bun, compared to a traditional Big Mac, which has two 1.6 ounce beef patties. The Mac Jr. is a essentially a single-layer Big Mac that will go for about $2.39 and $2.59, depending on location.  

Each sandwich will have the traditional Big Mac sauce.

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Photos of the Grand Mac in the Ohio region have already started to surface on Instagram (see below). Ultimately, these versions of the Big Mac are not new creations as they are often available in Korea, Japan, Germany, Australia and France (see photos below).

"We're always evolving our menu and providing our customers with new and exciting food innovations, and we look forward to learning more from this test," says the McDonald's spokeswoman.  

Each sandwich appears to address new consumer needs that have arisen since the Big Mac was first launched back in 1967.

First, the Grand Mac takes aim at the larger, better burgers being made by such names as Five Guys and Smashburger, which have left the Big Mac looking a wee bit small to some hungry folks.  As for the Mac Jr., it's likely easier to hold and eat on the go, such as the burgers being scoffed down at the up and coming Shake Shack (SHAK) - Get Report

The different variations of the Big Mac are the latest in a series of new product tests by McDonald's this year designed to supersize sales.  On Monday, McDonald's said it will launch brats in over 125 Wisconsin markets, which comes on the heels of pilots of kale bowls and yogurt smoothies in southern California.

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In part, the tests are in keeping with McDonald CEO Steve Easterbrook's mission to make the burger giant more interesting to consumers inundated with fast food choices.

"We are running McDonald's differently, and building on our unique advantages as we strive to become a modern and progressive burger company," said Easterbrook on a Jan. 25 call with analysts.