McDonald's (MCD) - Get Report is gearing up to release a new Sriracha burger aimed at millennials who have fawned over the condiment for years. But that new item is focused on lunch and dinner, leaving McDonald's with a traffic lull between 2 p.m. and 5 p.m.

Watch: Quiz: Which Company Makes Your Favorite Junk Food?

Here are some of the sweet new items McDonald's is testing out as the fast food chain aims to fill the afternoon gap between meals.

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McCafe Chocolate Chip Frappe 

The blended drink has 620 calories and 17 grams of saturated fat, which is more than half a day's worth. But it sure does look delicious.

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Muffin Toppers

These are pretty much what they sound like -- the best part of any muffin. They're only available in test locations for now alongside other pastries and pies.

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McCafe Croissant

These buttery treats are also only available in test locations. But they give North American McDonald's locations a uniquely Parisian flare.

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Turtle Brownie Sundae

The indulgent sundae has hot fudge, caramel, whipped cream, salted pecans and more than double the recommended amount of sugar for a regular weight adult.

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