Steps
-
Preheat your oven to 325°F (165°C). Line a baking sheet with unbleached parchment paper.
-
Mash the banana in a bowl until it forms a completely smooth paste. A very ripe banana will mash easily with minimal effort. There should be no lumps remaining.
-
Add the oat flour to the mashed banana and stir until a firm, slightly sticky dough forms. If the dough is too wet to handle, add more oat flour one tablespoon at a time until you can shape it without it sticking to your hands.
-
Divide the dough into 10 equal pieces. Roll each piece into a thick stick shape, about 3 inches long and 3/4 inch wide — sized so a baby can grip one end in their fist with the other end exposed for gumming.
-
Place the rusks on the prepared baking sheet with space between them. Bake for 20 minutes, then flip each rusk over and bake for another 15-20 minutes until they are completely dry and hard throughout. They should not bend at all when you press on them.
-
Turn off the oven and leave the rusks inside with the door slightly cracked for another 10 minutes to dry further. Remove and let cool completely on a wire rack. They will harden even more as they cool.
Why It Works
Store-bought teething biscuits like arrowroot cookies often contain refined flour, sugar, and palm oil. These two-ingredient rusks are nothing but whole oats and banana. Oat flour supplies iron, which babies begin to deplete from their birth stores around six months of age, making dietary iron increasingly important. Banana provides potassium, magnesium, and vitamin B6. The double-bake technique removes nearly all moisture, creating a rusk that is hard enough to withstand enthusiastic gumming without breaking into chunks, but that gradually softens with saliva into a safe, dissolvable paste.
Tips
- The bend test. After cooling, try to bend a rusk. If it flexes even slightly, put the batch back in the oven at 300°F for another 10 minutes. A proper teething rusk should feel like a solid stick — hard enough that it cannot snap or break into pieces that pose a choking hazard.
- Always supervise. Even though these are designed to dissolve slowly, never leave your baby alone with a rusk. Sit with them and watch for any pieces that may come loose. Remove the rusk if it gets small enough to fit entirely inside the mouth.
- Keep it simple on purpose. Two ingredients means minimal allergen risk and easy digestion. Once your baby has been eating solids comfortably and your pediatrician gives the green light, you can add a tiny pinch of cinnamon to the dough for variety.