In the bowl of an electric mixer fitted with the paddle attachment, beat butter, brown sugar, and honey on medium-high speed until light and fluffy, 3 to 4 minutes, scraping down sides of bowl as needed. Add eggs, one at a time, beating until combined after each addition. With mixer on the lowest speed, add flour mixture in two batches, alternating with milk and beginning and ending with flour. Add reserved pear sauce and mix to combine, about 1 minute, scraping down sides of bowl as needed. Do not over mix.