There's something to be said about our tendency to judge a book by its cover. The same goes for restaurants, but you might find yourself missing out on your new favorite spot if you pass up these gems! From the outside, these restaurants don't look like much, but their food will have you coming back for more. Check out these eight Milwaukee hole-in-the-wall restaurants that are sure to steal your heart.

1. Boo Boo's Sandwiches

Boo Boo's Sandwiches is the latest hole-in-the-wall sandwich shop in Walker's Point and the sister restaurant to the well-loved Soup Bros. Although the little spot can be hard to find, it's well worth the search. Their sandwiches will make any lunch break better, and their fresh cut fries are downright addicting.

Boo Boo's Sandwiches is located at 405 S. 2nd St., Milwaukee.

2. La Casa De Alberto

This family-run hole in the wall spot serves up some of the best Mexican food in Milwaukee! It might not look like much from the outside and the interior is a simple dining room with a bar, but everything from the food to the people here are delightful.

La Casa De Alberto is located at 624 W. National Ave., Milwaukee.

3. Soup Bros.

Soup Brothers, or better known as "Soup Bros" is a popular Walker's Point gem — at least, for those who know it's there. This eclectic lunch spot started in 1998 and has been keeping Milwaukeeans warm and full ever since.

Soup Bros. is located at 209 W. Florida St., Milwaukee.

4. Ono Kine Grindz

Ono Kine Grindz is one of the few Hawaiian restaurants in the Milwaukee area, and everything about this tiny shop is amazing. The owners, David and Guy, will steal your heart... if their food doesn't first! While you're stopping in to pick up your delicious, home-cooked take out food, you can wander through their store full of awesome Hawaiian foods and products! This pop & pop shop is perfect any night of the week.

Ono Kine Grindz is located at 7215 W. North Ave., Wauwatosa.

5. Coffee Makes You Black

This north side breakfast spot might just steal your heart. This is one place that will truly make you feel like family, from the service to the home cooking! From chicken and waffles to classic breakfast dishes,

and of course, the coffee,

Coffee Makes You Black is your go-to for morning comfort food.

Coffee Makes You Black is located at 2803 N. Teutonia Ave., Milwaukee.

6. Cafe India

Cafe India does Indian food right, all served up in a friendly environment at an affordable price. This is a Milwaukee go-to for a quick and delicious dinner! Their Walker's Point location might only look like a storefront, but the service and the food are out of this world.

Cafe India has two locations: 605-A S. 1st St., Walker's Point, and 2201 S. Kinnickinnic Ave., Milwaukee.

7. El Senorial

Need more authentic Mexican food? El Senorial is a friendly and family-oriented spot, serving up tacos and much more late into the night. This south side spot will have you feeling like a part of the family, and their food is sure to keep you coming back for more.

El Senorial is located at 1901 S. 31st St., Milwaukee.

8. The Noble

The Noble is a rustic little spot on 2nd Street. This place is tiny but the food is out of this world. Make sure to check out their menu that changes daily on their Facebook page. Unfortunately, they don't take reservations, so be sure to get there early and enjoy a drink at the bar while waiting for a table (it's worth it.)

The Noble is located at 704 S. 2nd St., Milwaukee.

There you have it... eight restaurants that are so much more than meets the eye! Where's your hidden gem in Milwaukee? Let us know in the comments!