Ion-option-button width?

If anyone is going through this question (just like I did):

In order to achieve what has been asked above:

HTML

<ion-option-button class="custom-option-btn">
<p>Button Text</p>
</ion-option-button>

SASS

.custom-option-btn {
    /* replace 90px by your target width */
    min-width: 90px;

    p {
        color: #fff;
        /* here's the trick to center the text: */
        width: 100%;
        text-align: center;
    }
}