Decadent Frosted Brownies - Diamond Nuts

Ingredients

• 1 1/2 cups sugar
• 1 cup vegetable oil
• 1/2 cup vanilla Greek yogurt
• 1 tablespoon vanilla extract
• 2 cups flour
• 1/3 cup cocoa
• 1 1/2 teaspoons baking soda
• 1 teaspoon salt
• Frosting
• 1/4 cup butter
• 1 cup sugar
• 1/4 cup milk
• 1/2 cup milk chocolate chips
• 1/2 cup miniature marshmellows
• 1 teaspoon vanilla extract
• 1/2 cup Diamond of California® walnuts