Slow Cooker Cowboy Brisket

• 1 fresh brisket, cut in half to 2-3 lbs. (freeze remainder for later)
• 2 tbsp BBQ rub (save extra for another use)
• 1 tbsp brown sugar
• 2 tsp paprika
• 1 1/2 tsp coarse salt (such as kosher)
• 1 tsp ground cumin
• 1 sweet onion, cut into 1/4 inch slices
• 3 garlic cloves, chopped
• 1 cup cilantro, chopped

BBQ Rub

• 1 tbsp coarse salt (such as kosher)
• 1 tbsp cracked pepper
• 2 tsp paprika
• 1 tbsp chili powder
• 1/4 tsp cayenne pepper
• 1/4 tsp garlic powder
• 1/4 tsp ground cumin
• 1/4 tsp dried oregano
• 1/4 tsp dried thyme