Farmers’ Market Expansion Act of 2023 This bill includes tree nuts as one of the eligible foods under the Senior Farmers' Market Nutrition Program (SFMNP). The Department of Agriculture's SFMNP provides grants to participating states to provide low-income seniors with coupons/vouchers that may be used at farmers’ markets, roadside stands, and community supported agriculture programs to purchase eligible foods (i.e., fresh, nutritious, locally-grown fruits, vegetables, herbs, and honey).