Tarragon Rice Stuffed Mushrooms - Cajun Country Rice

Ingredients

• 24 oz. baby portobello mushrooms ((about 20 mushrooms))
• 1 cup cooked Cajun Country rice
• 2 tbsp. olive oil, (plus more for topping)
• 2 large shallots, (finely chopped)
• 3 cloves garlic, (minced)
• 1 tsp. chopped fresh tarragon
• 1 tsp. lemon zest
• 1/2 tsp. salt
• 1/2 cup grated Parmesan cheese, (plus 1/4 cup, for topping)
• 1/4 cup Panko breadcrumbs, (for topping)