Retro-Style Chocolate Sheet Cake (GF)

Ingredients

• 1/2 cup melted coconut oil
• 1/2 cup whole milk
• 1/2 – 3/4 cup maple syrup
• 2 eggs, at room temperature
• 2 tsp vanilla extract
• 2 cups almond flour
• 1 cup cocoa powder
• 1 tsp baking soda
• 1 tsp kosher salt
• 3/4 cup brewed coffee
• 1/2 cup semi-sweet mini chocolate chips (optional)
• 1 stick (1/2 cup) salted butter, at room temperature
• 2-3 cups powdered sugar
• 1/2 cup cocoa powder
• 1/4 cup warmed milk, plus more for thinning