Southwest Chicken Panini

Step 1
Whisk water, vegetable oil, and marinade mix together in a glass or ceramic bowl. Add chicken and toss to coat. Cover with plastic wrap and marinate in the refrigerator for 15 to 30 minutes, or overnight.

Step 2
Preheat an electric grill (such as George Foreman®) for medium heat and lightly oil the grate.

Step 3
Remove chicken from the marinade and shake off excess. Discard the remaining marinade.

Step 4
Place chicken on the preheated grill, close the lid, and cook until no longer pink in the center and the juices run clear, about 6 minutes. An instant-read thermometer inserted into the center should read at least 165 degrees F (74 degrees C).

Step 5
While chicken is cooking, heat olive oil in a skillet over medium heat. Add bell peppers and onion and saute until tender, 5 to 7 minutes.

Step 6
Butter one side of each slice of bread. Assemble 2 sandwiches by layering Monterey Jack cheese, vegetables, and chicken between the unbuttered sides of the bread.

Step 7
Place sandwiches on the grill, close the lid, and cook until bread is golden brown and cheese is melted, about 3 minutes.