Tuscan "Baked" Beans - Chew Nibble Nosh

Ingredients

• 1 cup diced red onion
• 1 Tbsp. olive oil
• 2 tsp. minced garlic
• 1 tsp. minced fresh rosemary
• 2 (15.5 oz.) cans cannellini beans, drained, but reserve the liquid
• 1 cup shredded provolone or fontina cheese
• 1/3 cup pitted, chopped kalamata olives
• 1 tsp. kosher salt
• 1 tsp. pepper
• 2 Tbsp. chopped fresh parsley