Red Velvet Sheet Cake with Blueberries

Ingredients

• 3, ,Oakdell Omega-3 Brown Eggs, room temperature
• 0.5, cup ,unsalted butter, room temperature
• 1, cup ,light brown sugar, packed
• 0.75, cup ,granulated sugar
• 2.5, tbsp ,red velvet emulsion
• 2.25, tbsp ,unsweetened cocoa powder
• 1, tsp ,salt
• 2.25, cup ,all-purpose flour
• 1.5, cup ,buttermilk, room temperature
• 0.25, cup ,sour cream
• 1, tbps ,white vinegar
• 1.25, tsp ,baking soda
• 1, ,(8 oz) package cream cheese
• 0.5, cup ,unsalted butter
• , ,Pinch of salt
• 1, tsp ,vanilla
• 1, ,(1 lb) bag powdered sugar
• , ,Blueberries