Conversation Heart Sugar Cookie Bars

Ingredients

• 4, ,large Oakdell Omega-3 Brown Eggs
• 1, cup ,unsalted butter, room temperature
• 2, cups ,granulated sugar
• 2, teaspoons ,vanilla extract
• 5, cups ,all-purpose flour
• 1, teaspoon ,salt
• 1/2, teaspoon ,baking soda
• 1/2, teaspoon ,baking powder
• 1 1/2, teaspoons ,cornstarch
• 1/2, cup ,Valentine's sprinkles
• 1 1/2, cups ,unsalted butter, room temperature
• 6, tablespoons ,heavy cream
• 4 1/2, cups ,powdered sugar
• 1/4, teaspoon ,salt
• , ,Pink, yellow, orange, purple, green and red food coloring
• , ,Pastry bag with small size tip (#2) for piping sayings onto cookies