Step 1: Gather Your Ingredients - Collect all your ingredients: blue food coloring, vanilla extract, sugar, flour, baking powder, milk, and butter.
Step 2: Preheat Your Oven - Set your oven to 350°F (175°C) to get it nice and warm while you mix.
Step 3: Mix Dry Ingredients - In a bowl, whisk together flour, sugar, and baking powder until well combined.
Step 4: Cream Butter and Sugar - In another bowl, beat softened butter and sugar until fluffy and light.
Step 5: Add Wet Ingredients - Mix in milk and vanilla extract to the butter mixture until smooth.
Step 6: Combine Mixtures - Gradually add the dry ingredients to the wet mixture, stirring gently.
Step 7: Add Frost Blue Color - Stir in blue food coloring until you achieve your desired shade of frost blue.
Step 8: Pour into Baking Pan - Pour the batter into a greased baking pan, spreading it evenly.
Step 9: Bake - Place the pan in the oven and bake for 25-30 minutes, or until golden brown.
Step 10: Cool and Serve - Let it cool for a bit, then slice and enjoy your Frost Blue Delight!