Most Amazing Bean Dip

Name: Most Amazing Bean Dip
Prep time: 10 min
Cook time: 15 min
Total time: 25 min
Cuisine: Mexican
Ingredients: 1 tablespoon olive oil; 1 small yellow onion (diced finely); 3 cloves garlic (minced); 1 (7 ounce) green chile peppers (diced); 1/2 teaspoon ground cumin; 1/4 teaspoon salt; 1/4 teaspoon cayenne pepper (optional); 2 (15 ounce cans) refried beans (undrained); 1/4 cup water; 1/4 cup fresh cilantro leaves (chopped); 1/2 cup crumbled queso fresco