Whisk flour, baking powder, and spices in a bowl

Grate butter into mixture, stirring every few grates

Add oil and water (actual ice water, but ice doesn't count toward your 1/4 cup)

Knead dough together

Wrap in plastic wrap in disc shape and refrigerate 10-15min

Dust surface with flour, place dough, dust more flour on top, and roll into a thin dough

Use a 1 3/4 crinkle cookie cutter to cut cracker shapes

Re-roll dough again and cut out shapes until all dough is used

Place crackers on parchment paper lined baking sheet

Use a fork or toothpick or poke holes in crackers

Bake at 375 for 8-10 min until golden

Brush with melted butter and sprinkle sea salt over finished crackers

Mix drippy PB with protein powder or oat flour to thicken it slightly, place in a piping bag, and pipe onto half the cracker, topping to sandwich with remaining crackers

Store in airtight container. After a day or two they might soften, so place in air fryer for 2-3ish min to crisp them back up before enjoying