Jam?
Peanut butter?
Crushed pink mini meringues?
Tinted marshmallow fluff or meringue icing? https://www.simplyrecipes.com/recipes/how_to_make_swiss_meringue/
Cookie dough? https://www.allrecipes.com/recipe/255365/edible-cookie-dough/
Cookie butter?
Halves of pink Oreos like salami rounds?
Fruit leather like bacon?
Slices of pink cake?
Slices of firm jelly or milk jelly?
spoiler
You could add an extra pack of unflavoured jelly to the recipe for milk jelly for an opaque pink sliceable substance. https://www.food.com/recipe/milk-jelly-529101
Or add a can of condensed milk to the recipe for Knox blocks https://www.food.com/recipe/knox-blocks-281669
Here’s an unholy car crash between the two (creamy blocks) but I don’t know how it would hold up structurally https://momwithaprep.com/knox-blocks-with-1-box-of-jello/
Homemade pink protein bar dough rolled out flat?
Prepare and slice a large pink mochi?
Edit: Saw the other comment. Crepes is probably the simplest and best answer