Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
In a bowl, whisk together flour, baking powder, and salt. Set it aside.
In another bowl, cream the butter and sugar until light and fluffy. This takes about 3–4 minutes—don’t rush it.
Add eggs one at a time, beating well after each. Stir in vanilla.
Add the flour mixture in three additions, alternating with milk. Start and end with flour.
Gently fold in the strawberry puree. Add food coloring if you're feeling fancy.
Divide the batter between the pans and smooth the tops.
Bake for 30–35 minutes or until a toothpick comes out clean. Cool completely before frosting.